Code of Federal Regulations Title 10. Energy 10 CFR Pt. 71, App. A—Determination of A 1 and A 2

Current as of January 02, 2025 | Updated by Findlaw Staff

I. Values of A₁ and A₂ for individual radionuclides, which are the bases for many activity limits elsewhere in these regulations, are given in Table A–1. The curie (Ci) values specified are obtained by converting from the Terabecquerel (TBq) value. The Terabecquerel values are the regulatory standard. The curie values are for information only and are not intended to be the regulatory standard. Where values of A₁ and A₂ are unlimited, it is for radiation control purposes only. For nuclear criticality safety, some materials are subject to controls placed on fissile material.

II. a. For individual radionuclides whose identities are known, but which are not listed in Table A–1, the A₁ and A₂ values contained in Table A–3 may be used. Otherwise, the licensee shall obtain prior Commission approval of the A₁ and A₂ values for radionuclides not listed in Table A–1, before shipping the material.

b. For individual radionuclides whose identities are known, but which are not listed in Table A–2, the exempt material activity concentration and exempt consignment activity values contained in Table A–3 may be used. Otherwise, the licensee shall obtain prior Commission approval of the exempt material activity concentration and exempt consignment activity values for radionuclides not listed in Table A–2, before shipping the material.

c. The licensee shall submit requests for prior approval, described under paragraphs II.a. and II.b. of this Appendix, to the Commission, in accordance with § 71.1 of this part.

III. In the calculations of A₁ and A₂ for a radionuclide not in Table A–1, a single radioactive decay chain, in which radionuclides are present in their naturally occurring proportions, and in which no daughter radionuclide has a half-life either longer than 10 days, or longer than that of the parent radionuclide, shall be considered as a single radionuclide, and the activity to be taken into account, and the A1 and A2 value to be applied, shall be those corresponding to the parent radionuclide of that chain. In the case of radioactive decay chains in which any daughter radionuclide has a half-life either longer than 10 days, or greater than that of the parent radionuclide, the parent and those daughter radionuclides shall be considered as mixtures of different radionuclides.

IV. For mixtures of radionuclides whose identities and respective activities are known, the following conditions apply:

a. For special form radioactive material, the maximum quantity transported in a Type A package is as follows:

where B(i) is the activity of radionuclide i in special form, and A₁ (i) is the A₁ value for radionuclide i.

b. For normal form radioactive material, the maximum quantity transported in a Type A package is as follows:

where B(i) is the activity of radionuclide i in normal form, and A₂ (i) is the A₂ value for radionuclide i.

c. If the package contains both special and normal form radioactive material, the activity that may be transported in a Type A package is as follows:

where B(i) is the activity of radionuclide i as special form radioactive material, A₁ (i) is the A₁ value for radionuclide i, C(j) is the activity of radionuclide j as normal form radioactive material, and A₂ (j) is the A₂ value for radionuclide j.

d. Alternatively, the A₁ value for mixtures of special form material may be determined as follows:

where f(i) is the fraction of activity for radionuclide i in the mixture and A₁ (i) is the appropriate A₁ value for radionuclide i.

e. Alternatively, the A₂ value for mixtures of normal form material may be determined as follows:

where f(i) is the fraction of activity for radionuclide i in the mixture and A₂ (i) is the appropriate A₂ value for radionuclide i.

f. The exempt activity concentration for mixtures of nuclides may be determined as follows:

where f(i) is the fraction of activity concentration of radionuclide i in the mixture and [A](i) is the activity concentration for exempt material containing radionuclide i.

g. The activity limit for an exempt consignment for mixtures of radionuclides may be determined as follows:

where f(i) is the fraction of activity of radionuclide i in the mixture and A(i) is the activity limit for exempt consignments for radionuclide i.

V.a. When the identity of each radionuclide is known, but the individual activities of some of the radionuclides are not known, the radionuclides may be grouped, and the lowest A1 or A2 value, as appropriate, for the radionuclides in each group may be used in applying the formulas in paragraph IV. Groups may be based on the total alpha activity and the total beta/gamma activity when these are known, using the lowest A₁ or A₂ values for the alpha emitters and beta/gamma emitters.

b. When the identity of each radionuclide is known but the individual activities of some of the radionuclides are not known, the radionuclides may be grouped and the lowest [A] (activity concentration for exempt material) or A (activity limit for exempt consignment) value, as appropriate, for the radionuclides in each group may be used in applying the formulas in paragraph IV of this appendix. Groups may be based on the total alpha activity and the total beta/gamma activity when these are known, using the lowest [A] or A values for the alpha emitters and beta/gamma emitters, respectively.

Table A–1—A₁ and A₂ Values For Radionuclides
						Specific activity
Symbol of radionuclide	Element and atomic number	A₁ (TBq)	A₁ (Ci) ^b	A₂ (TBq)	A₂ (Ci) ^b	(TBq/g)	(Ci/g)
Ac-225 ^(a)	Actinium (89)․․․․․․․․	8.0x10⁻¹	2.2x10¹	6.0x10⁻³	1.6x10⁻¹	2.1x10³	5.8x10⁴
Ac-227 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	9.0x10⁻⁵	2.4x10⁻³	2.7	7.2x10¹
Ac-228․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	5.0x10⁻¹	1.4x10¹	8.4x10⁴	2.2x10⁶
Ag-105․․․․․․․․․	Silver (47)․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	1.1x10³	3.0x10⁴
Ag-108m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	9.7x10⁻¹	2.6x10¹
Ag-110m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	1.8x10²	4.7x10³
Ag-111․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	6.0x10⁻¹	1.6x10¹	5.8x10³	1.6x10⁵
Al-26․․․․․․․․․․	Aluminum (13)․․․․․․․․	1.0x10⁻¹	2.7	1.0x10⁻¹	2.7	7.0x10⁻⁴	1.9x10⁻²
Am-241․․․․․․․․․	Americium (95)․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	1.3x10⁻¹	3.4
Am-242m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	3.6x10⁻¹	1.0x10¹
Am-243 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0	1.4x10²	1.0x10⁻³	2.7x10⁻²	7.4x10⁻³	2.0x10⁻¹
Ar-37․․․․․․․․․․	Argon (18)․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	3.7x10³	9.9x10⁴
Ar-39․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10¹	5.4x10²	1.3	3.4x10¹
Ar-41․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	1.5x10⁶	4.2x10⁷
As-72․․․․․․․․․․	Arsenic (33)․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	6.2x10⁴	1.7x10⁶
As-73․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	8.2x10²	2.2x10⁴
As-74․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	9.0x10⁻¹	2.4x10¹	3.7x10³	9.9x10⁴
As-76․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	5.8x10⁴	1.6x10⁶
As-77․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	7.0x10⁻¹	1.9x10¹	3.9x10⁴	1.0x10⁶
At-211 ^(a)	Astatine (85)․․․․․․․․	2.0x10¹	5.4x10²	5.0x10⁻¹	1.4x10¹	7.6x10⁴	2.1x10⁶
Au-193․․․․․․․․․	Gold (79)․․․․․․․․․․․․	7.0	1.9x10²	2.0	5.4x10¹	3.4x10⁴	9.2x10⁵
Au-194․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	1.5x10⁴	4.1x10⁵
Au-195․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	6.0	1.6x10²	1.4x10²	3.7x10³
Au-198․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	6.0x10⁻¹	1.6x10¹	9.0x10³	2.4x10⁵
Au-199․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	6.0x10⁻¹	1.6x10¹	7.7x10³	2.1x10⁵
Ba-131 ^(a)	Barium (56)․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	3.1x10³	8.4x10⁴
Ba-133․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	9.4	2.6x10²
Ba-133m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	6.0x10⁻¹	1.6x10¹	2.2x10⁴	6.1x10⁵
Ba-140 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	3.0x10⁻¹	8.1	2.7x10³	7.3x10⁴
Be-7․․․․․․․․․․․	Beryllium (4)․․․․․․․․	2.0x10¹	5.4x10²	2.0x10¹	5.4x10²	1.3x10⁴	3.5x10⁵
Be-10․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	6.0x10⁻¹	1.6x10¹	8.3x10⁻⁴	2.2x10⁻²
Bi-205․․․․․․․․․	Bismuth (83)․․․․․․․․․	7.0 x 10⁻¹	1.9 x 10¹	7.0 x 10⁻¹	1.9 x 10¹	1.5 x 10³	4.2 x 10⁴
Bi-206․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	3.8x10³	1.0x10⁵
Bi-207․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	1.9	5.2x10¹
Bi-210․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	6.0x10⁻¹	1.6x10¹	4.6x10³	1.2x10⁵
Bi-210m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	2.0x10⁻²	5.4x10⁻¹	2.1x10⁻⁵	5.7x10⁻⁴
Bi-212 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	6.0x10⁻¹	1.6x10¹	5.4x10⁵	1.5x10⁷
Bk-247․․․․․․․․․	Berkelium (97)․․․․․․․	8.0	2.2x10²	8.0x10⁻⁴	2.2x10⁻²	3.8x10⁻²	1.0
Bk-249 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	3.0x10⁻¹	8.1	6.1x10¹	1.6x10³
Br-76․․․․․․․․․․	Bromine (35)․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	9.4x10⁴	2.5x10⁶
Br-77․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	2.6x10⁴	7.1x10⁵
Br-82․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	4.0x10⁴	1.1x10⁶
C-11․․․․․․․․․․․	Carbon (6)․․․․․․․․․․․	1.0	2.7x10¹	6.0x10⁻¹	1.6x10¹	3.1x10⁷	8.4x10⁸
C-14․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	3.0	8.1x10¹	1.6x10⁻¹	4.5
Ca-41․․․․․․․․․․	Calcium (20)․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	3.1x10⁻³	8.5x10⁻²
Ca-45․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	1.0	2.7x10¹	6.6x10²	1.8x10⁴
Ca-47 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	3.0x10⁻¹	8.1	2.3x10⁴	6.1x10⁵
Cd-109․․․․․․․․․	Cadmium (48)․․․․․․․․․	3.0x10¹	8.1x10²	2.0	5.4x10¹	9.6x10¹	2.6x10³
Cd-113m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	5.0x10⁻¹	1.4x10¹	8.3	2.2x10²
Cd-115 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	4.0x10⁻¹	1.1x10¹	1.9x10⁴	5.1x10⁵
Cd-115m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	9.4x10²	2.5x10⁴
Ce-139․․․․․․․․․	Cerium (58)․․․․․․․․․․	7.0	1.9x10²	2.0	5.4x10¹	2.5x10²	6.8x10³
Ce-141․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	6.0x10⁻¹	1.6x10¹	1.1x10³	2.8x10⁴
Ce-143․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	6.0x10⁻¹	1.6x10¹	2.5x10⁴	6.6x10⁵
Ce-144 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	1.2x10²	3.2x10³
Cf-248․․․․․․․․․	Californium (98)․․․․․	4.0x10¹	1.1x10³	6.0x10⁻³	1.6x10⁻¹	5.8x10¹	1.6x10³
Cf-249․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	8.0x10⁻⁴	2.2x10⁻²	1.5x10⁻¹	4.1
Cf-250․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	2.0x10⁻³	5.4x10⁻²	4.0	1.1x10²
Cf-251․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0	1.9x10²	7.0x10⁻⁴	1.9x10⁻²	5.9x10⁻²	1.6
Cf-252․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․	1.0 x 10^-¹	2.7	3.0 x 10^-³	8.1 x 10^-²	2.0 x 10¹	5.4 x 10²
Cf-253 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10⁻²	1.1	1.1x10³	2.9x10⁴
Cf-254․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁻³	2.7x10⁻²	1.0x10⁻³	2.7x10⁻²	3.1x10²	8.5x10³
Cl-36․․․․․․․․․․	Chlorine (17)․․․․․․․․	1.0x10¹	2.7x10²	6.0x10⁻¹	1.6x10¹	1.2x10⁻³	3.3x10⁻²
Cl-38․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	4.9x10⁶	1.3x10⁸
Cm-240․․․․․․․․․	Curium (96)․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10⁻²	5.4x10⁻¹	7.5x10²	2.0x10⁴
Cm-241․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	1.0	2.7x10¹	6.1x10²	1.7x10⁴
Cm-242․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	1.0x10⁻²	2.7x10⁻¹	1.2x10²	3.3x10³
Cm-243․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0	2.4x10²	1.0x10⁻³	2.7x10⁻²	1.9x10⁻³	5.2x10¹
Cm-244․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	2.0x10⁻³	5.4x10⁻²	3.0	8.1x10¹
Cm-245․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0	2.4x10²	9.0x10⁻⁴	2.4x10⁻²	6.4x10⁻³	1.7x10⁻¹
Cm-246․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0	2.4x10²	9.0x10⁻⁴	2.4x10⁻²	1.1x10⁻²	3.1x10⁻¹
Cm-247 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	1.0x10⁻³	2.7x10⁻²	3.4x10⁻⁶	9.3x10⁻⁵
Cm-248․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․	2.0 x 10⁻²	5.4 x 10⁻¹	3.0 x 10⁻⁴	8.1 x 10⁻³	1.6 x 10⁻⁴	4.2 x 10⁻³
Co-55․․․․․․․․․․	Cobalt (27)․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	1.1x10⁵	3.1x10⁶
Co-56․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	1.1x10³	3.0x10⁴
Co-57․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10¹	2.7x10²	3.1x10²	8.4x10³
Co-58․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	1.2x10³	3.2x10⁴
Co-58m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	2.2x10⁵	5.9x10⁶
Co-60․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	4.2x10¹	1.1x10³
Cr-51․․․․․․․․․․	Chromium (24)․․․․․․․․	3.0x10¹	8.1x10²	3.0x10¹	8.1x10²	3.4x10³	9.2x10⁴
Cs-129․․․․․․․․․	Cesium (55)․․․․․․․․․․	4.0	1.1x10²	4.0	1.1x10²	2.8x10⁴	7.6x10⁵
Cs-131․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10¹	8.1x10²	3.0x10¹	8.1x10²	3.8x10³	1.0x10⁵
Cs-132․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	5.7x10³	1.5x10⁵
Cs-134․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	4.8x10¹	1.3x10³
Cs-134m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	6.0x10⁻¹	1.6x10¹	3.0x10⁵	8.0x10⁶
Cs-135․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	1.0	2.7x10¹	4.3x10⁻⁵	1.2x10⁻³
Cs-136․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	2.7x10³	7.3x10⁴
Cs-137 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	6.0x10⁻¹	1.6x10¹	3.2	8.7x10¹
Cu-64․․․․․․․․․․	Copper (29)․․․․․․․․․․	6.0	1.6x10²	1.0	2.7x10¹	1.4x10⁵	3.9x10⁶
Cu-67․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	7.0x10⁻¹	1.9x10¹	2.8x10⁴	7.6x10⁵
Dy-159․․․․․․․․․	Dysprosium (66)․․․․․․	2.0x10¹	5.4x10²	2.0x10¹	5.4x10²	2.1x10²	5.7x10³
Dy-165․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	6.0x10⁻¹	1.6x10¹	3.0x10⁵	8.2x10⁶
Dy-166 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	3.0x10⁻¹	8.1	8.6x10³	2.3x10⁵
Er-169․․․․․․․․․	Erbium (68)․․․․․․․․․․	4.0x10¹	1.1x10³	1.0	2.7x10¹	3.1x10³	8.3x10⁴
Er-171․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0x10⁻¹	2.2x10¹	5.0x10⁻¹	1.4x10¹	9.0x10⁴	2.4x10⁶
Eu-147․․․․․․․․․	Europium (63)․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	1.4x10³	3.7x10⁴
Eu-148․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	6.0x10²	1.6x10⁴
Eu-149․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	2.0x10¹	5.4x10²	3.5x10²	9.4x10³
Eu-150 (short lived)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	7.0x10⁻¹	1.9x10¹	6.1x10⁴	1.6x10⁶
Eu-150 (long lived)	․․․․․․․․․․․․․․․․․․․․․	7.0 x 10⁻¹	1.9 x 10¹	7.0 x 10⁻¹	1.9 x 10¹	6.1 x 10⁴	1.6 x 10⁶
Eu-152․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	6.5	1.8x10²
Eu-152m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0x10⁻¹	2.2x10¹	8.0x10⁻¹	2.2x10¹	8.2x10⁴	2.2x10⁶
Eu-154․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	6.0x10⁻¹	1.6x10¹	9.8	2.6x10²
Eu-155․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	3.0	8.1x10¹	1.8x10¹	4.9x10²
Eu-156․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	2.0x10³	5.5x10⁴
F-18․․․․․․․․․․․	Fluorine (9)․․․․․․․․․	1.0	2.7x10¹	6.0x10⁻¹	1.6x10¹	3.5x10⁶	9.5x10⁷
Fe-52 ^(a)․	Iron (26)․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	2.7x10⁵	7.3x10⁶
Fe-55․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	8.8x10¹	2.4x10³
Fe-59․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	9.0x10⁻¹	2.4x10¹	1.8x10³	5.0x10⁴
Fe-60 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10⁻¹	5.4	7.4x10⁻⁴	2.0x10⁻²
Ga-67․․․․․․․․․․	Gallium (31)․․․․․․․․․	7.0	1.9x10²	3.0	8.1x10¹	2.2x10⁴	6.0x10⁵
Ga-68․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	1.5x10⁶	4.1x10⁷
Ga-72․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	1.1x10⁵	3.1x10⁶
Gd-146 ^(a)	Gadolinium (64)․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	6.9x10²	1.9x10⁴
Gd-148․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	2.0x10⁻³	5.4x10⁻²	1.2	3.2x10¹
Gd-153․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	9.0	2.4x10²	1.3x10²	3.5x10³
Gd-159․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	6.0x10⁻¹	1.6x10¹	3.9x10⁴	1.1x10⁶
Ge-68 ^(a)․	Germanium (32)․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	2.6x10²	7.1x10³
Ge-71․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	5.8x10³	1.6x10⁵
Ge-77․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	1.3x10⁵	3.6x10⁶
Hf-172 ^(a)	Hafnium (72)․․․․․․․․․	6.0x10⁻¹	1.6x10¹	6.0x10⁻¹	1.6x10¹	4.1x10¹	1.1x10³
Hf-175․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	3.9x10²	1.1x10⁴
Hf-181․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	5.0x10⁻¹	1.4x10¹	6.3x10²	1.7x10⁴
Hf-182․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	8.1x10⁻⁶	2.2x10⁻⁴
Hg-194 ^(a)	Mercury (80)․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	1.3x10⁻¹	3.5
Hg-195m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	7.0x10⁻¹	1.9x10¹	1.5x10⁴	4.0x10⁵
Hg-197․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	1.0x10¹	2.7x10²	9.2x10³	2.5x10⁵
Hg-197m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	4.0x10⁻¹	1.1x10¹	2.5x10⁴	6.7x10⁵
Hg-203․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0	1.4x10²	1.0	2.7x10¹	5.1x10²	1.4x10⁴
Ho-166․․․․․․․․․	Holmium (67)․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	2.6x10⁴	7.0x10⁵
Ho-166m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	5.0x10⁻¹	1.4x10¹	6.6x10⁻²	1.8
I-123․․․․․․․․․․	Iodine (53)․․․․․․․․․․	6.0	1.6x10²	3.0	8.1x10¹	7.1x10⁴	1.9x10⁶
I-124․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	9.3x10³	2.5x10⁵
I-125․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	3.0	8.1x10¹	6.4x10²	1.7x10⁴
I-126․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	1.0	2.7x10¹	2.9x10³	8.0x10⁴
I-129․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	6.5x10⁻⁶	1.8x10⁻⁴
I-131․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	7.0x10⁻¹	1.9x10¹	4.6x10³	1.2x10⁵
I-132․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	3.8x10⁵	1.0x10⁷
I-133․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	6.0x10⁻¹	1.6x10¹	4.2x10⁴	1.1x10⁶
I-134․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	9.9x10⁵	2.7x10⁷
I-135 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	6.0x10⁻¹	1.6x10¹	1.3x10⁵	3.5x10⁶
In-111․․․․․․․․․	Indium (49)․․․․․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	1.5x10⁴	4.2x10⁵
In-113m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0	1.1x10²	2.0	5.4x10¹	6.2x10⁵	1.7x10⁷
In-114m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	5.0x10⁻¹	1.4x10¹	8.6x10²	2.3x10⁴
In-115m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0	1.9x10²	1.0	2.7x10¹	2.2x10⁵	6.1x10⁶
Ir-189 ^(a)	Iridium (77)․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10¹	2.7x10²	1.9x10³	5.2x10⁴
Ir-190․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	2.3x10³	6.2x10⁴
Ir-192․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․	^(c)1.0	L4^c 2.7 x 10¹	6.0 x 10^-¹	1.6 x 10¹	3.4 x 10²	9.2 x 10³
Ir-194․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	3.1x10⁴	8.4x10⁵
K-40․․․․․․․․․․․	Potassium (19)․․․․․․․	9.0x10⁻¹	2.4x10¹	9.0x10⁻¹	2.4x10¹	2.4x10⁻⁷	6.4x10⁻⁶
K-42․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	2.2x10⁵	6.0x10⁶
K-43․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	6.0x10⁻¹	1.6x10¹	1.2x10⁵	3.3x10⁶
Kr-79․․․․․․․․․․	Krypton (36)․․․․․․․․․	4.0	1.1 x 10²	2.0	5.4 x 10¹	4.2 x 10⁴	1.1 x 10⁶
Kr-81․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․	4.0 x 10¹	1.1 x 10³	4.0 x 10¹	1.1 x 10³	7.8 x 10^-⁴	2.1 x 10^-²
Kr-85․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10¹	2.7x10²	1.5x10¹	3.9x10²
Kr-85m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0	2.2x10²	3.0	8.1x10¹	3.0x10⁵	8.2x10⁶
Kr-87․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	1.0x10⁶	2.8x10⁷
La-137․․․․․․․․․	Lanthanum (57)․․․․․․․	3.0x10¹	8.1x10²	6.0	1.6x10²	1.6x10⁻³	4.4x10⁻²
La-140․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	2.1x10⁴	5.6x10⁵
Lu-172․․․․․․․․․	Lutetium (71)․․․․․․․․	6.0x10⁻¹	1.6x10¹	6.0x10⁻¹	1.6x10¹	4.2x10³	1.1x10⁵
Lu-173․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0	2.2x10²	8.0	2.2x10²	5.6x10¹	1.5x10³
Lu-174․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0	2.4x10²	9.0	2.4x10²	2.3x10¹	6.2x10²
Lu-174m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	1.0x10¹	2.7x10²	2.0x10²	5.3x10³
Lu-177․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10¹	8.1x10²	7.0x10⁻¹	1.9x10¹	4.1x10³	1.1x10⁵
Mg-28 ^(a)․	Magnesium (12)․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	2.0x10⁵	5.4x10⁶
Mn-52․․․․․․․․․․	Manganese (25)․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	1.6x10⁴	4.4x10⁵
Mn-53․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	6.8x10⁻⁵	1.8x10⁻³
Mn-54․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	2.9x10²	7.7x10³
Mn-56․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	8.0x10⁵	2.2x10⁷
Mo-93․․․․․․․․․․	Molybdenum (42)․․․․․․	4.0x10¹	1.1x10³	2.0x10¹	5.4x10²	4.1x10⁻²	1.1
Mo-99 ^(a)^(h)	․․․․․․․․․․․․․․․․․․․․․	1.0	2.7 x 10¹	6.0 x 10^-¹	1.6 x 10¹	1.8 x 10⁴	4.8 x 10⁵
N-13․․․․․․․․․․․	Nitrogen (7)․․․․․․․․․	9.0x10⁻¹	2.4x10¹	6.0x10⁻¹	1.6x10¹	5.4x10⁷	1.5x10⁹
Na-22․․․․․․․․․․	Sodium (11)․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	2.3x10²	6.3x10³
Na-24․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	3.2x10⁵	8.7x10⁶
Nb-93m․․․․․․․․․	Niobium (41)․․․․․․․․․	4.0x10¹	1.1x10³	3.0x10¹	8.1x10²	8.8	2.4x10²
Nb-94․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	6.9x10⁻³	1.9x10⁻¹
Nb-95․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	1.5x10³	3.9x10⁴
Nb-97․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	6.0x10⁻¹	1.6x10¹	9.9x10⁵	2.7x10⁷
Nd-147․․․․․․․․․	Neodymium (60)․․․․․․․	6.0	1.6x10²	6.0x10⁻¹	1.6x10¹	3.0x10³	8.1x10⁴
Nd-149․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	5.0x10⁻¹	1.4x10¹	4.5x10⁵	1.2x10⁷
Ni-59․․․․․․․․․․	Nickel (28)․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	3.0x10⁻³	8.0x10⁻²
Ni-63․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	3.0x10¹	8.1x10²	2.1	5.7x10¹
Ni-65․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	7.1x10⁵	1.9x10⁷
Np-235․․․․․․․․․	Neptunium (93)․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	5.2x10¹	1.4x10³
Np-236 (short-lived)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	2.0	5.4x10¹	4.7x10⁻⁴	1.3x10⁻²
Np-236 (long-lived)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁰	2.4x10²	2.0x10⁻²	5.4x10⁻¹	4.7x10⁻⁴	1.3x10⁻²
Np-237․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	2.0x10⁻³	5.4x10⁻²	2.6x10⁻⁵	7.1x10⁻⁴
Np-239․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0	1.9x10²	4.0x10⁻¹	1.1x10¹	8.6x10³	2.3x10⁵
Os-185․․․․․․․․․	Osmium (76)․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	2.8x10²	7.5x10³
Os-191․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	2.0	5.4x10¹	1.6x10³	4.4x10⁴
Os-191m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	3.0x10¹	8.1x10²	4.6x10⁴	1.3x10⁶
Os-193․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	6.0x10⁻¹	1.6x10¹	2.0x10⁴	5.3x10⁵
Os-194 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	1.1x10¹	3.1x10²
P-32․․․․․․․․․․․	Phosphorus (15)․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	1.1x10⁴	2.9x10⁵
P-33․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	1.0	2.7x10¹	5.8x10³	1.6x10⁵
Pa-230 ^(a)	Protactinium (91)․․․․	2.0	5.4x10¹	7.0x10⁻²	1.9	1.2x10³	3.3x10⁴
Pa-231․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0	1.1x10²	4.0x10⁻⁴	1.1x10⁻²	1.7x10⁻³	4.7x10⁻²
Pa-233․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0	1.4x10²	7.0x10⁻¹	1.9x10¹	7.7x10²	2.1x10⁴
Pb-201․․․․․․․․․	Lead (82)․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	6.2x10⁴	1.7x10⁶
Pb-202․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10¹	5.4x10²	1.2x10⁻⁴	3.4x10⁻³
Pb-203․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0	1.1x10²	3.0	8.1x10¹	1.1x10⁴	3.0x10⁵
Pb-205․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	4.5x10⁻⁶	1.2x10⁻⁴
Pb-210 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	5.0x10⁻²	1.4	2.8	7.6x10¹
Pb-212 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	2.0x10⁻¹	5.4	5.1x10⁴	1.4x10⁶
Pd-103 ^(a)	Palladium (46)․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	2.8x10³	7.5x10⁴
Pd-107․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	1.9x10⁻⁵	5.1x10⁻⁴
Pd-109․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	5.0x10⁻¹	1.4x10¹	7.9x10⁴	2.1x10⁶
Pm-143․․․․․․․․․	Promethium (61)․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	1.3x10²	3.4x10³
Pm-144․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	9.2x10¹	2.5x10³
Pm-145․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10¹	8.1x10²	1.0x10¹	2.7x10²	5.2	1.4x10²
Pm-147․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0	5.4x10¹	3.4x10¹	9.3x10²
Pm-148m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0x10⁻¹	2.2x10¹	7.0x10⁻¹	1.9x10¹	7.9x10²	2.1x10⁴
Pm-149․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	6.0x10⁻¹	1.6x10¹	1.5x10⁴	4.0x10⁵
Pm-151․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	6.0x10⁻¹	1.6x10¹	2.7x10⁴	7.3x10⁵
Po-210․․․․․․․․․	Polonium (84)․․․․․․․․	4.0x10¹	1.1x10³	2.0x10⁻²	5.4x10⁻¹	1.7x10²	4.5x10³
Pr-142․․․․․․․․․	Praseodymium (59)․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	4.3x10⁴	1.2x10⁶
Pr-143․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	6.0x10⁻¹	1.6x10¹	2.5x10³	6.7x10⁴
Pt-188 ^(a)	Platinum (78)․․․․․․․․	1.0	2.7x10¹	8.0x10⁻¹	2.2x10¹	2.5x10³	6.8x10⁴
Pt-191․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0	1.1x10²	3.0	8.1x10¹	8.7x10³	2.4x10⁵
Pt-193․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	1.4	3.7x10¹
Pt-193m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	5.0x10⁻¹	1.4x10¹	5.8x10³	1.6x10⁵
Pt-195m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	5.0x10⁻¹	1.4x10¹	6.2x10³	1.7x10⁵
Pt-197․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	6.0x10⁻¹	1.6x10¹	3.2x10⁴	8.7x10⁵
Pt-197m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	6.0x10⁻¹	1.6x10¹	3.7x10⁵	1.0x10⁷
Pu-236․․․․․․․․․	Plutonium (94)․․․․․․․	3.0x10¹	8.1x10²	3.0x10⁻³	8.1x10⁻²	2.0x10¹	5.3x10²
Pu-237․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	2.0x10¹	5.4x10²	4.5x10²	1.2x10⁴
Pu-238․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	6.3x10⁻¹	1.7x10¹
Pu-239․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	2.3x10⁻³	6.2x10⁻²
Pu-240․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	8.4x10⁻³	2.3x10⁻¹
Pu-241 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	6.0x10⁻²	1.6	3.8	1.0x10²
Pu-242․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	1.5x10⁻⁴	3.9x10⁻³
Pu-244 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	1.0x10⁻³	2.7x10⁻²	6.7x10⁻⁷	1.8x10⁻⁵
Ra-223 ^(a)	Radium (88)․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	7.0x10⁻³	1.9x10⁻¹	1.9x10³	5.1x10⁴
Ra-224 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	2.0x10⁻²	5.4x10⁻¹	5.9x10³	1.6x10⁵
Ra-225 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	4.0x10⁻³	1.1x10⁻¹	1.5x10³	3.9x10⁴
Ra-226 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	3.0x10⁻³	8.1x10⁻²	3.7x10⁻²	1.0
Ra-228 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	2.0x10⁻²	5.4x10⁻¹	1.0x10¹	2.7x10²
Rb-81․․․․․․․․․․	Rubidium (37)․․․․․․․․	2.0	5.4x10¹	8.0x10⁻¹	2.2x10¹	3.1x10⁵	8.4x10⁶
Rb-83 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	6.8x10²	1.8x10⁴
Rb-84․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	1.8x10³	4.7x10⁴
Rb-86․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	3.0x10³	8.1x10⁴
Rb-87․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	3.2x10⁻⁹	8.6x10⁻⁸
Rb(nat)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	6.7x10⁶	1.8x10⁸
Re-184․․․․․․․․․	Rhenium (75)․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	6.9x10²	1.9x10⁴
Re-184m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	1.0	2.7x10¹	1.6x10²	4.3x10³
Re-186․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	6.0x10⁻¹	1.6x10¹	6.9x10³	1.9x10⁵
Re-187․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	1.4x10⁻⁹	3.8x10⁻⁸
Re-188․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	3.6x10⁴	9.8x10⁵
Re-189 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	6.0x10⁻¹	1.6x10¹	2.5x10⁴	6.8x10⁵
Re(nat)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	0.0	2.4x10⁻⁸
Rh-99․․․․․․․․․․	Rhodium (45)․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	3.0x10³	8.2x10⁴
Rh-101․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0	1.1x10²	3.0	8.1x10¹	4.1x10¹	1.1x10³
Rh-102․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	4.5x10¹	1.2x10³
Rh-102m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	2.3x10²	6.2x10³
Rh-103m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	1.2x10⁶	3.3x10⁷
Rh-105․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	8.0x10⁻¹	2.2x10¹	3.1x10⁴	8.4x10⁵
Rn-222 ^(a)	Radon (86)․․․․․․․․․․․	3.0x10⁻¹	8.1	4.0x10⁻³	1.1x10⁻¹	5.7x10³	1.5x10⁵
Ru-97․․․․․․․․․․	Ruthenium (44)․․․․․․․	5.0	1.4x10²	5.0	1.4x10²	1.7x10⁴	4.6x10⁵
Ru-103 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	1.2x10³	3.2x10⁴
Ru-105․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	6.0x10⁻¹	1.6x10¹	2.5x10⁵	6.7x10⁶
Ru-106 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	1.2x10²	3.3x10³
S-35․․․․․․․․․․․	Sulphur (16)․․․․․․․․․	4.0x10¹	1.1x10³	3.0	8.1x10¹	1.6x10³	4.3x10⁴
Sb-122․․․․․․․․․	Antimony (51)․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	1.5x10⁴	4.0x10⁵
Sb-124․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	6.0x10⁻¹	1.6x10¹	6.5x10²	1.7x10⁴
Sb-125․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	1.0	2.7x10¹	3.9x10¹	1.0x10³
Sb-126․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	3.1x10³	8.4x10⁴
Sc-44․․․․․․․․․․	Scandium (21)․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	6.7x10⁵	1.8x10⁷
Sc-46․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	5.0x10⁻¹	1.4x10¹	1.3x10³	3.4x10⁴
Sc-47․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	7.0x10⁻¹	1.9x10¹	3.1x10⁴	8.3x10⁵
Sc-48․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	5.5x10⁴	1.5x10⁶
Se-75․․․․․․․․․․	Selenium (34)․․․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	5.4x10²	1.5x10⁴
Se-79․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0	5.4x10¹	2.6x10⁻³	7.0x10⁻²
Si-31․․․․․․․․․․	Silicon (14)․․․․․․․․․	6.0x10⁻¹	1.6x10¹	6.0x10⁻¹	1.6x10¹	1.4x10⁶	3.9x10⁷
Si-32․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	5.0x10⁻¹	1.4x10¹	3.9	1.1x10²
Sm-145․․․․․․․․․	Samarium (62)․․․․․․․․	1.0x10¹	2.7x10²	1.0x10¹	2.7x10²	9.8x10¹	2.6x10³
Sm-147․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	8.5x10^-10	2.3x10^-8
Sm-151․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	1.0x10¹	2.7x10²	9.7x10⁻¹	2.6x10¹
Sm-153․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0	2.4x10²	6.0x10⁻¹	1.6x10¹	1.6x10⁴	4.4x10⁵
Sn-113 ^(a)	Tin (50)․․․․․․․․․․․․․	4.0	1.1x10²	2.0	5.4x10¹	3.7x10²	1.0x10⁴
Sn-117m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0	1.9x10²	4.0x10⁻¹	1.1x10¹	3.0x10³	8.2x10⁴
Sn-119m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	3.0x10¹	8.1x10²	1.4x10²	3.7x10³
Sn-121m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	9.0x10⁻¹	2.4x10¹	2.0	5.4x10¹
Sn-123․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0x10⁻¹	2.2x10¹	6.0x10⁻¹	1.6x10¹	3.0x10²	8.2x10³
Sn-125․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	4.0x10³	1.1x10⁵
Sn-126 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	4.0x10⁻¹	1.1x10¹	1.0x10⁻³	2.8x10⁻²
Sr-82 ^(a)․	Strontium (38)․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	2.3x10³	6.2x10⁴
Sr-85․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	8.8x10²	2.4x10⁴
Sr-85m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0	1.4x10²	5.0	1.4x10²	1.2x10⁶	3.3x10⁷
Sr-87m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	4.8x10⁵	1.3x10⁷
Sr-89․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	6.0x10⁻¹	1.6x10¹	1.1x10³	2.9x10⁴
Sr-90 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	5.1	1.4x10²
Sr-91 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	1.3x10⁵	3.6x10⁶
Sr-92 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	3.0x10⁻¹	8.1	4.7x10⁵	1.3x10⁷
T(H-3)․․․․․․․․․	Tritium (1)․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	3.6x10²	9.7x10³
Ta-178 (long-lived)	Tantalum (73)․․․․․․․․	1.0	2.7x10¹	8.0x10⁻¹	2.2x10¹	4.2x10⁶	1.1x10⁸
Ta-179․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10¹	8.1x10²	3.0x10¹	8.1x10²	4.1x10¹	1.1x10³
Ta-182․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	9.0x10⁻¹	2.4x10¹	5.0x10⁻¹	1.4x10¹	2.3x10²	6.2x10³
Tb-157․․․․․․․․․	Terbium (65)․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	5.6x10⁻¹	1.5x10¹
Tb-158․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	5.6x10⁻¹	1.5x10¹
Tb-160․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10¹	6.0x10⁻¹	1.6x10¹	4.2x10²	1.1x10⁴
Tc-95m ^(a)	Technetium (43)․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	8.3x10²	2.2x10⁴
Tc-96․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	1.2x10⁴	3.2x10⁵
Tc-96m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	1.4x10⁶	3.8x10⁷
Tc-97․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	5.2x10⁻⁵	1.4x10⁻³
Tc-97m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	1.0	2.7x10¹	5.6x10²	1.5x10⁴
Tc-98․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0x10⁻¹	2.2x10¹	7.0x10⁻¹	1.9x10¹	3.2x10⁻⁵	8.7x10⁻⁴
Tc-99․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	9.0x10⁻¹	2.4x10¹	6.3x10⁻⁴	1.7x10⁻²
Tc-99m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	4.0	1.1x10²	1.9x10⁵	5.3x10⁶
Te-121․․․․․․․․․	Tellurium (52)․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	2.4x10³	6.4x10⁴
Te-121m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0	1.4x10²	3.0	8.1x10¹	2.6x10²	7.0x10³
Te-123m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0	2.2x10²	1.0	2.7x10¹	3.3x10²	8.9x10³
Te-125m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	9.0x10⁻¹	2.4x10¹	6.7x10²	1.8x10⁴
Te-127․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	7.0x10⁻¹	1.9x10¹	9.8x10⁴	2.6x10⁶
Te-127m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	5.0x10⁻¹	1.4x10¹	3.5x10²	9.4x10³
Te-129․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	6.0x10⁻¹	1.6x10¹	7.7x10⁵	2.1x10⁷
Te-129m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	8.0x10⁻¹	2.2x10¹	4.0x10⁻¹	1.1x10¹	1.1x10³	3.0x10⁴
Te-131m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	7.0x10⁻¹	1.9x10¹	5.0x10⁻¹	1.4x10¹	3.0x10⁴	8.0x10⁵
Te-132 ^(a)	․․․․․․․․․․․․․․․․․․․․․	5.0 x 10⁻¹	1.4 x 10¹	4.0 x 10⁻¹	1.1 x 10¹	1.1 x 10⁴	3.0 x 10⁵
Th-227․․․․․․․․․	Thorium (90)․․․․․․․․․	1.0x10¹	2.7x10²	5.0x10⁻³	1.4x10⁻¹	1.1x10³	3.1x10⁴
Th-228 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	1.0x10⁻³	2.7x10⁻²	3.0x10¹	8.2x10²
Th-229․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0	1.4x10²	5.0x10⁻⁴	1.4x10⁻²	7.9x10⁻³	2.1x10⁻¹
Th-230․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	7.6x10⁻⁴	2.1x10⁻²
Th-231․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10⁻²	5.4x10⁻¹	2.0x10⁴	5.3x10⁵
Th-232․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	4.0x10⁻⁹	1.1x10⁻⁷
Th-234 ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	8.6x10²	2.3x10⁴
Th(nat)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	8.1x10⁻⁹	2.2x10⁻⁷
Ti-44 ^(a)․	Titanium (22)․․․․․․․․	5.0x10⁻¹	1.4x10¹	4.0x10⁻¹	1.1x10¹	6.4	1.7x10²
Tl-200․․․․․․․․․	Thallium (81)․․․․․․․․	9.0x10⁻¹	2.4x10¹	9.0x10⁻¹	2.4x10¹	2.2x10⁴	6.0x10⁵
Tl-201․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	4.0	1.1x10²	7.9x10³	2.1x10⁵
Tl-202․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	2.0x10³	5.3x10⁴
Tl-204․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	7.0x10⁻¹	1.9x10¹	1.7x10¹	4.6x10²
Tm-167․․․․․․․․․	Thulium (69)․․․․․․․․․	7.0	1.9x10²	8.0x10⁻¹	2.2x10¹	3.1x10³	8.5x10⁴
Tm-170․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	6.0x10⁻¹	1.6x10¹	2.2x10²	6.0x10³
Tm-171․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³
U-230 (fast lung absorption) ^(a)^(d)	Uranium (92)․․․․․․․․․	4.0x10¹	1.1x10³	1.0x10⁻¹	2.7	1.0x10³	2.7x10⁴
U-230 (medium lung absorption) ^(a)^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10⁻³	1.1x10⁻¹	1.0x10³	2.7x10⁴
U-230 (slow lung absorption) ^(a)^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10¹	8.1x10²	3.0x10⁻³	8.1x10⁻²	1.0x10³	2.7x10⁴
U-232 (fast lung absorption) ^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	1.0x10⁻²	2.7x10⁻¹	8.3x10⁻¹	2.2x10¹
U-232 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	7.0x10⁻³	1.9x10⁻¹	8.3x10⁻¹	2.2x10¹
U-232 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10²	1.0x10⁻³	2.7x10⁻²	8.3x10⁻¹	2.2x10¹
U-233 (fast lung absorption) ^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	9.0x10⁻²	2.4	3.6x10⁻⁴	9.7x10⁻³
U-233 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10⁻²	5.4x10⁻¹	3.6x10⁻⁴	9.7x10⁻³
U-233 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	6.0x10⁻³	1.6x10⁻¹	3.6x10⁻⁴	9.7x10⁻³
U-234 (fast lung absorption) ^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	9.0x10⁻²	2.4	2.3x10⁻⁴	6.2x10⁻³
U-234 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10⁻²	5.4x10⁻¹	2.3x10⁻⁴	6.2x10⁻³
U-234 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	6.0x10⁻³	1.6x10⁻¹	2.3x10⁻⁴	6.2x10⁻³
U-235 (all lung absorption types) ^(a)^(d)^(e)^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	8.0x10⁻⁸	2.2x10⁻⁶
U-236 (fast lung absorption) ^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	2.4x10⁻⁶	6.5x10⁻⁵
U-236 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	2.0x10⁻²	5.4x10⁻¹	2.4x10⁻⁶	6.5x10⁻⁵
U-236 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	6.0x10⁻³	1.6x10⁻¹	2.4x10⁻⁶	6.5x10⁻⁵
U-238 (all lung absorption types) ^(d)^(e)^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	1.2x10⁻⁸	3.4x10⁻⁷
U (nat)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	2.6x10⁻⁸	7.1x10⁻⁷
U (enriched to 20% or less) ^(g)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	See Table A-4	See Table A-4
U (dep)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	See Table A-4	See Table A-4
V-48․․․․․․․․․․․	Vanadium (23)․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	6.3x10³	1.7x10⁵
V-49․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	3.0x10²	8.1x10³
W-178 ^(a)․	Tungsten (74)․․․․․․․․	9.0	2.4x10²	5.0	1.4x10²	1.3x10³	3.4x10⁴
W-181․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10¹	8.1x10²	3.0x10¹	8.1x10²	2.2x10²	6.0x10³
W-185․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	8.0x10⁻¹	2.2x10¹	3.5x10²	9.4x10³
W-187․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	6.0x10⁻¹	1.6x10¹	2.6x10⁴	7.0x10⁵
W-188 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	3.0x10⁻¹	8.1	3.7x10²	1.0x10⁴
Xe-122 ^(a)	Xenon (54)․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	4.8x10⁴	1.3x10⁶
Xe-123․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	7.0x10⁻¹	1.9x10¹	4.4x10⁵	1.2x10⁷
Xe-127․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0	1.1x10²	2.0	5.4x10¹	1.0x10³	2.8x10⁴
Xe-131m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	3.1x10³	8.4x10⁴
Xe-133․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10¹	5.4x10²	1.0x10¹	2.7x10²	6.9x10³	1.9x10⁵
Xe-135․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	2.0	5.4x10¹	9.5x10⁴	2.6x10⁶
Y-87 ^(a)․․	Yttrium (39)․․․․․․․․․	1.0	2.7x10¹	1.0	2.7x10¹	1.7x10⁴	4.5x10⁵
Y-88․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	5.2x10²	1.4x10⁴
Y-90․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	2.0x10⁴	5.4x10⁵
Y-91․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	6.0x10⁻¹	1.6x10¹	6.0x10⁻¹	1.6x10¹	9.1x10²	2.5x10⁴
Y-91m․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	1.5x10⁶	4.2x10⁷
Y-92․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻¹	5.4	2.0x10⁻¹	5.4	3.6x10⁵	9.6x10⁶
Y-93․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10⁻¹	8.1	3.0x10⁻¹	8.1	1.2x10⁵	3.3x10⁶
Yb-169․․․․․․․․․	Ytterbium (70)․․․․․․․	4.0	1.1x10²	1.0	2.7x10¹	8.9x10²	2.4x10⁴
Yb-175․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0x10¹	8.1x10²	9.0x10⁻¹	2.4x10¹	6.6x10³	1.8x10⁵
Zn-65․․․․․․․․․․	Zinc (30)․․․․․․․․․․․․	2.0	5.4x10¹	2.0	5.4x10¹	3.0x10²	8.2x10³
Zn-69․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	6.0x10⁻¹	1.6x10¹	1.8x10⁶	4.9x10⁷
Zn-69m ^(a)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	3.0	8.1x10¹	6.0x10⁻¹	1.6x10¹	1.2x10⁵	3.3x10⁶
Zr-88․․․․․․․․․․	Zirconium (40)․․․․․․․	3.0	8.1x10¹	3.0	8.1x10¹	6.6x10²	1.8x10⁴
Zr-93․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	9.3x10⁻⁵	2.5x10⁻³
Zr-95 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0	5.4x10¹	8.0x10⁻¹	2.2x10¹	7.9x10²	2.1x10⁴
Zr-97 ^(a)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	4.0x10⁻¹	1.1x10¹	4.0x10⁻¹	1.1x10¹	7.1x10⁴	1.9x10⁶

^a A₁ and/or A₂ values include contributions from daughter nuclides with half-lives less than 10 days, as listed in the following:


Mg-28	Al-28
Ca-47	Sc-47
Ti-44	Sc-44
Fe-52	Mn-52m
Fe-60	Co-60m
Zn-69m	Zn-69
Ge-68	Ga-68
Rb-83	Kr-83m
Sr-82	Rb-82
Sr-90	Y-90
Sr-91	Y-91m
Sr-92	Y-92
Y-87	Sr-87m
Zr-95	Nb-95m
Zr-97	Nb-97m, Nb-97
Mo-99	Tc-99m
Tc-95m	Tc-95
Tc-96m	Tc-96
Ru-103	Rh-103m
Ru-106	Rh-106
Pd-103	Rh-103m
Ag-108m	Ag-108
Ag-110m	Ag-110
Cd-115	In-115m
In-114m	In-114
Sn-113	In-113m
Sn-121m	Sn-121
Sn-126	Sb-126m
Te-127m	Te-127
Te-129m	Te-129
Te-131m	Te-131
Te-132	I-132
I-135	Xe-135m
Xe-122	I-122
Cs-137	Ba-137m
Ba-131	Cs-131
Ba-140	La-140
Ce-144	Pr-144m, Pr-144
Pm-148m	Pm-148
Gd-146	Eu-146
Dy-166	Ho-166
Hf-172	Lu-172
W-178	Ta-178
W-188	Re-188
Re-189	Os-189m
Os-194	Ir-194
Ir-189	Os-189m
Pt-188	Ir-188
Hg-194	Au-194
Hg-195m	Hg-195
Pb-210	Bi-210
Pb-212	Bi-212, Tl-208, Po-212
Bi-210m	Tl-206
Bi-212	Tl-208, Po-212
At-211	Po-211
Rn-222	Po-218, Pb-214, At-218, Bi-214, Po-214
Ra-223	Rn-219, Po-215, Pb-211, Bi-211, Po-211, Tl-207
Ra-224	Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212
Ra-225	Ac-225, Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209
Ra-226	Rn-222, Po-218, Pb-214, At-218, Bi-214, Po-214
Ra-228	Ac-228
Ac-225	Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209
Ac-227	Fr-223
Th-228	Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212
Th-234	Pa-234m, Pa-234
Pa-230	Ac-226, Th-226, Fr-222, Ra-222, Rn-218, Po-214
U-230	Th-226, Ra-222, Rn-218, Po-214
U-235	Th-231
Pu-241	U-237
Pu-244	U-240, Np-240m
Am-242m	Am-242, Np-238
Am-243	Np-239
Cm-247	Pu-243
Bk-249	Am-245
Cf-253	Cm-249

^b The values of A₁ and A₂ in Curies (Ci) are approximate and for information only; the regulatory standard units are Terabecquerels (TBq) (see Appendix A to Part 71—Determination of A₁ and A₂, Section I).

For radionuclide Bi–205, the specific activity is corrected to 1.5 x 10³ TBq/g.

For radionuclide Cm–248, the specific activity is corrected to 1.6 x 10^-4 TBq/g.

For radionuclide Eu–150 (long lived), the A₁ value is corrected to 7.0 x 10^-1 TBq.

For radionuclide Te–132(a), the specific activity is corrected to 3.0 x 10⁵ Ci/g.

^c The activity of Ir-192 in special form may be determined from a measurement of the rate of decay or a measurement of the radiation level at a prescribed distance from the source.

^d These values apply only to compounds of uranium that take the chemical form of UF₆, UO₂F₂ and UO₂(NO₃)₂ in both normal and accident conditions of transport.

^e These values apply only to compounds of uranium that take the chemical form of UO₃, UF₄, UCl₄ and hexavalent compounds in both normal and accident conditions of transport.

^f These values apply to all compounds of uranium other than those specified in notes (d) and (e) of this table.

^g These values apply to unirradiated uranium only.

^h A₂ = 0.74 TBq (20 Ci) for Mo-99 for domestic use.

Table A–2—Exempt Material Activity Concentrations and Exempt Consignment Activity Limits for Radionuclides
Symbol of radionuclide	Element and atomic number	Activity concentration for exempt material (Bq/g)	Activity concentration for exempt material (Ci/g)	Activity limit for exempt consignment (Bq)	Activity limit for exempt consignment (Ci)
Ac-225․․․․․․․․․	Actinium (89)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Ac-227․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁻¹	2.7x10⁻¹²	1.0x10³	2.7x10⁻⁸
Ac-228․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Ag-105․․․․․․․․․	Silver (47)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ag-108m ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Ag-110m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Ag-111․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Al-26․․․․․․․․․․	Aluminum (13)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Am-241․․․․․․․․․	Americium (95)․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Am-242m ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Am-243 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Ar-37․․․․․․․․․․	Argon (18)․․․․․․․․․․․․․	1.0x10⁶	2.7x10⁻⁵	1.0x10⁸	2.7x10⁻³
Ar-39․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁷	2.7x10⁻⁴	1.0x10⁴	2.7x10⁻⁷
Ar-41․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁹	2.7x10⁻²
As-72․․․․․․․․․․	Arsenic (33)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
As-73․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
As-74․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
As-76․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
As-77․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
At-211․․․․․․․․․	Astatine (85)․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Au-193․․․․․․․․․	Gold (79)․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Au-194․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Au-195․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Au-198․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Au-199․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ba-131․․․․․․․․․	Barium (56)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ba-133․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ba-133m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ba-140 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Be-7․․․․․․․․․․․	Beryllium (4)․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Be-10․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁶	2.7x10⁻⁵
Bi-205․․․․․․․․․	Bismuth (83)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Bi-206․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Bi-207․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Bi-210․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Bi-210m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Bi-212 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Bk-247․․․․․․․․․	Berkelium (97)․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Bk-249․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Br-76․․․․․․․․․․	Bromine (35)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Br-77․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Br-82․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
C-11․․․․․․․․․․․	Carbon (6)․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
C-14․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Ca-41․․․․․․․․․․	Calcium (20)․․․․․․․․․․․	1.0x10⁵	2.7x10⁻⁶	1.0x10⁷	2.7x10⁻⁴
Ca-45․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Ca-47․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Cd-109․․․․․․․․․	Cadmium (48)․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁶	2.7x10⁻⁵
Cd-113m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Cd-115․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Cd-115m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Ce-139․․․․․․․․․	Cerium (58)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ce-141․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Ce-143․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ce-144 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Cf-248․․․․․․․․․	Californium (98)․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Cf-249․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Cf-250․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Cf-251․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Cf-252․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Cf-253․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Cf-254․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Cl-36․․․․․․․․․․	Chlorine (17)․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁶	2.7x10⁻⁵
Cl-38․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Cm-240․․․․․․․․․	Curium (96)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Cm-241․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Cm-242․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Cm-243․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Cm-244․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Cm-245․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Cm-246․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Cm-247․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Cm-248․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Co-55․․․․․․․․․․	Cobalt (27)․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Co-56․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Co-57․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Co-58․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Co-58m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Co-60․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Cr-51․․․․․․․․․․	Chromium (24)․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Cs-129․․․․․․․․․	Cesium (55)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Cs-131․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Cs-132․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Cs-134․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Cs-134m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁵	2.7x10⁻⁶
Cs-135․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Cs-136․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Cs-137 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Cu-64․․․․․․․․․․	Copper (29)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Cu-67․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Dy-159․․․․․․․․․	Dysprosium (66)․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Dy-165․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Dy-166․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Er-169․․․․․․․․․	Erbium (68)․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Er-171․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Eu-147․․․․․․․․․	Europium (63)․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Eu-148․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Eu-149․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Eu-150 (short lived)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Eu-150 (long lived)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Eu-152․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Eu-152m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Eu-154․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Eu-155․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Eu-156․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
F-18․․․․․․․․․․․	Fluorine (9)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Fe-52․․․․․․․․․․	Iron (26)․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Fe-55․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁶	2.7x10⁻⁵
Fe-59․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Fe-60․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Ga-67․․․․․․․․․․	Gallium (31)․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ga-68․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Ga-72․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Gd-146․․․․․․․․․	Gadolinium (64)․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Gd-148․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Gd-153․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Gd-159․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Ge-68․․․․․․․․․․	Germanium (32)․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Ge-71․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁸	2.7x10⁻³
Ge-77․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Hf-172․․․․․․․․․	Hafnium (72)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Hf-175․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Hf-181․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Hf-182․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Hg-194․․․․․․․․․	Mercury (80)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Hg-195m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Hg-197․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Hg-197m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Hg-203․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Ho-166․․․․․․․․․	Holmium (67)․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁵	2.7x10⁻⁶
Ho-166m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
I-123․․․․․․․․․․	Iodine (53)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
I-124․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
I-125․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
I-126․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
I-129․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
I-131․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
I-132․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
I-133․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
I-134․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
I-135․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
In-111․․․․․․․․․	Indium (49)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
In-113m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
In-114m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
In-115m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ir-189․․․․․․․․․	Iridium (77)․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Ir-190․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Ir-192․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Ir-194․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
K-40․․․․․․․․․․․	Potassium (19)․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
K-42․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
K-43․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Kr-79․․․․․․․․․․	Krypton (36)․․․․․․․․․․․	1.0 x 10³	2.7 x 10^-8	1.0 x 10⁵	2.7 x 10^-6
Kr-81․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․	1.0 x 10⁴	2.7 x 10^-7	1.0 x 10⁷	2.7 x 10^-4
Kr-85․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁵	2.7x10⁻⁶	1.0x10⁴	2.7x10⁻⁷
Kr-85m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10¹⁰	2.7x10⁻¹
Kr-87․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁹	2.7x10⁻²
La-137․․․․․․․․․	Lanthanum (57)․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
La-140․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Lu-172․․․․․․․․․	Lutetium (71)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Lu-173․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Lu-174․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Lu-174m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Lu-177․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Mg-28․․․․․․․․․․	Magnesium (12)․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Mn-52․․․․․․․․․․	Manganese (25)․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Mn-53․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁹	2.7x10⁻²
Mn-54․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Mn-56․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Mo-93․․․․․․․․․․	Molybdenum (42)․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁸	2.7x10⁻³
Mo-99․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
N-13․․․․․․․․․․․	Nitrogen (7)․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁹	2.7x10⁻²
Na-22․․․․․․․․․․	Sodium (11)․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Na-24․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Nb-93m․․․․․․․․․	Niobium (41)․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Nb-94․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Nb-95․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Nb-97․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Nd-147․․․․․․․․․	Neodymium (60)․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Nd-149․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ni-59․․․․․․․․․․	Nickel (28)․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁸	2.7x10⁻³
Ni-63․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁵	2.7x10⁻⁶	1.0x10⁸	2.7x10⁻³
Ni-65․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Np-235․․․․․․․․․	Neptunium (93)․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Np-236 (short-lived)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Np-236 (long-lived)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Np-237 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Np-239․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Os-185․․․․․․․․․	Osmium (76)․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Os-191․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Os-191m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Os-193․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Os-194․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
P-32․․․․․․․․․․․	Phosphorus (15)․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁵	2.7x10⁻⁶
P-33․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁵	2.7x10⁻⁶	1.0x10⁸	2.7x10⁻³
Pa-230․․․․․․․․․	Protactinium (91)․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Pa-231․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Pa-233․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Pb-201․․․․․․․․․	Lead (82)․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Pb-202․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Pb-203․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Pb-205․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Pb-210 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Pb-212 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Pd-103․․․․․․․․․	Palladium (46)․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁸	2.7x10⁻³
Pd-107․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁵	2.7x10⁻⁶	1.0x10⁸	2.7x10⁻³
Pd-109․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Pm-143․․․․․․․․․	Promethium (61)․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Pm-144․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Pm-145․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Pm-147․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Pm-148m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Pm-149․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Pm-151․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Po-210․․․․․․․․․	Polonium (84)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Pr-142․․․․․․․․․	Praseodymium (59)․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Pr-143․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁶	2.7x10⁻⁵
Pt-188․․․․․․․․․	Platinum (78)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Pt-191․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Pt-193․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Pt-193m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Pt-195m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Pt-197․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Pt-197m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Pu-236․․․․․․․․․	Plutonium (94)․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Pu-237․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Pu-238․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Pu-239․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Pu-240․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Pu-241․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Pu-242․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Pu-244․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Ra-223 ^(b)	Radium (88)․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Ra-224 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Ra-225․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Ra-226 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Ra-228 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Rb-81․․․․․․․․․․	Rubidium (37)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Rb-83․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Rb-84․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Rb-86․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Rb-87․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Rb(nat)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Re-184․․․․․․․․․	Rhenium (75)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Re-184m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Re-186․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Re-187․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁶	2.7x10⁻⁵	1.0x10⁹	2.7x10⁻²
Re-188․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Re-189․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Re(nat)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁶	2.7x10⁻⁵	1.0x10⁹	2.7x10⁻²
Rh-99․․․․․․․․․․	Rhodium (45)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Rh-101․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Rh-102․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Rh-102m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Rh-103m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁸	2.7x10⁻³
Rh-105․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Rn-222 ^(b)	Radon (86)․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁸	2.7x10⁻³
Ru-97․․․․․․․․․․	Ruthenium (44)․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Ru-103․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Ru-105․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Ru-106 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
S-35․․․․․․․․․․․	Sulphur (16)․․․․․․․․․․․	1.0x10⁵	2.7x10⁻⁶	1.0x10⁸	2.7x10⁻³
Sb-122․․․․․․․․․	Antimony (51)․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁴	2.7x10⁻⁷
Sb-124․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Sb-125․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Sb-126․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Sc-44․․․․․․․․․․	Scandium (21)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Sc-46․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Sc-47․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Sc-48․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Se-75․․․․․․․․․․	Selenium (34)․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Se-79․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Si-31․․․․․․․․․․	Silicon (14)․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Si-32․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Sm-145․․․․․․․․․	Samarium (62)․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Sm-147․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Sm-151․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁸	2.7x10⁻³
Sm-153․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Sn-113․․․․․․․․․	Tin (50)․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Sn-117m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Sn-119m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Sn-121m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Sn-123․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Sn-125․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Sn-126․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Sr-82․․․․․․․․․․	Strontium (38)․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Sr-85․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Sr-85m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Sr-87m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Sr-89․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Sr-90 ^(b)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁴	2.7x10⁻⁷
Sr-91․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Sr-92․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
T(H-3)․․․․․․․․․	Tritium (1)․․․․․․․․․․․․	1.0x10⁶	2.7x10⁻⁵	1.0x10⁹	2.7x10⁻²
Ta-178 (long-lived)	Tantalum (73)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Ta-179․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Ta-182․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Tb-157․․․․․․․․․	Terbium (65)․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Tb-158․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Tb-160․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Tc-95m․․․․․․․․․	Technetium (43)․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Tc-96․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Tc-96m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Tc-97․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁸	2.7x10⁻³
Tc-97m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Tc-98․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Tc-99․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
Tc-99m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Te-121․․․․․․․․․	Tellurium (52)․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Te-121m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․	1.0 x 10²	2.7 x 10^-9	1.0 x 10⁶	2.7 x 10^-5
Te-123m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Te-125m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Te-127․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Te-127m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Te-129․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Te-129m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Te-131m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Te-132․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Th-227․․․․․․․․․	Thorium (90)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Th-228 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Th-229 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Th-230․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10⁴	2.7x10⁻⁷
Th-231․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Th-232․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
Th-234 ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁵	2.7x10⁻⁶
Th (nat) ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
Ti-44․․․․․․․․․․	Titanium (22)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
Tl-200․․․․․․․․․	Thallium (81)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Tl-201․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Tl-202․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Tl-204․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁴	2.7x10⁻⁷
Tm-167․․․․․․․․․	Thulium (69)․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Tm-170․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Tm-171․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁸	2.7x10⁻³
U-230 (fast lung absorption) ^(b)^(d)	Uranium (92)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
U-230 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-230 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-232 (fast lung absorption) ^(b)^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
U-232 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-232 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-233 (fast lung absorption) ^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-233 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
U-233 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
U-234 (fast lung absorption) ^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-234 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
U-234 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
U-235 (all lung absorption types) ^(b)^(d)^(e)^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-236 (fast lung absorption) ^(d)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-236 (medium lung absorption) ^(e)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
U-236 (slow lung absorption) ^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U-238 (all lung absorption types) ^(b)^(d)^(e)^(f)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁴	2.7x10⁻⁷
U (nat) ^(b)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
U (enriched to 20% or less) ^(g)	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
U (dep)․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0	2.7x10⁻¹¹	1.0x10³	2.7x10⁻⁸
V-48․․․․․․․․․․․	Vanadium (23)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶
V-49․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
W-178․․․․․․․․․․	Tungsten (74)․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
W-181․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
W-185․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁷	2.7x10⁻⁴
W-187․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
W-188․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Xe-122․․․․․․․․․	Xenon (54)․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁹	2.7x10⁻²
Xe-123․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁹	2.7x10⁻²
Xe-127․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁵	2.7x10⁻⁶
Xe-131m․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁴	2.7x10⁻⁷
Xe-133․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁴	2.7x10⁻⁷
Xe-135․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10¹⁰	2.7x10⁻¹
Y-87․․․․․․․․․․․	Yttrium (39)․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Y-88․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Y-90․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁵	2.7x10⁻⁶
Y-91․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁶	2.7x10⁻⁵
Y-91m․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Y-92․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Y-93․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁵	2.7x10⁻⁶
Yb-169․․․․․․․․․	Ytterbium (70)․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁷	2.7x10⁻⁴
Yb-175․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Zn-65․․․․․․․․․․	Zinc (30)․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Zn-69․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10⁴	2.7x10⁻⁷	1.0x10⁶	2.7x10⁻⁵
Zn-69m․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Zr-88․․․․․․․․․․	Zirconium (40)․․․․․․․․․	1.0x10²	2.7x10⁻⁹	1.0x10⁶	2.7x10⁻⁵
Zr-93 ^(b)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10³	2.7x10⁻⁸	1.0x10⁷	2.7x10⁻⁴
Zr-95․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁶	2.7x10⁻⁵
Zr-97 ^(b)․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	1.0x10¹	2.7x10⁻¹⁰	1.0x10⁵	2.7x10⁻⁶

^a [Reserved]

^b Parent nuclides and their progeny included in secular equilibrium are listed as follows:

Sr-90	Y-90
Zr-93	Nb-93m
Zr-97	Nb-97
Ru-106	Rh-106
Ag-108m	Ag-108
Cs-137	Ba-137m
Ce-144	Pr-144
Ba-140	La-140
Bi-212	Tl-208 (0.36), Po-212 (0.64)
Pb-210	Bi-210, Po-210
Pb-212	Bi-212, Tl-208 (0.36), Po-212 (0.64)
Rn-222	Po-218, Pb-214, Bi-214, Po-214
Ra-223	Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224	Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)
Ra-226	Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
Ra-228	Ac-228
Th-228	Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212(0.64)
Th-229	Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209
Th-nat	Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)
Th-234	Pa-234m
U-230	Th-226, Ra-222, Rn-218, Po-214
U-232	Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)
U-235	Th-231
U-238	Th-234, Pa-234m
U-nat	Th-234, Pa-234m, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
Np-237	Pa-233
Am-242m	Am-242
Am-243	Np-239

^c [Reserved]

^d These values apply only to compounds of uranium that take the chemical form of UF₆, UO₂F₂ and UO₂(NO₃)₂ in both normal and accident conditions of transport.

^e These values apply only to compounds of uranium that take the chemical form of UO₃, UF₄, UCl₄ and hexavalent compounds in both normal and accident conditions of transport.

^f These values apply to all compounds of uranium other than those specified in notes (d) and (e) of this table.

^g These values apply to unirradiated uranium only.

Table A–3—General Values for A₁ and A₂
	A₁	A₂
Contents	(TBq)	(Ci)	(TBq)	(Ci)	Activity concentration for exempt material (Bq/g)	Activity concentration for exempt material (Ci/g)	Activity limits for exempt consignments (Bq)	Activity limits for exempt consignments (Ci)
Only beta or gamma emitting radionuclides are known to be present	1 x 10⁻¹	2.7 x 10⁰	2 x 10⁻²	5.4 x 10⁻¹	1 x 10¹	2.7 x 10⁻¹⁰	1 x 10⁴	2.7 x 10⁻⁷
Alpha emitting nuclides, but no neutron emitters, are known to be present (a)	2 x 10^-¹	5.4 x 10⁰	9 x 10^-5	2.4 x 10^-3	1 x 10^-1	2.7 x 10^-12	1 x 10³	2.7 x 10^-8
Neutron emitting nuclides are known to be present or no relevant data are available	1 x 10^-3	2.7 x 10^-2	9 x 10^-5	2.4 x 10^-3	1 x 10^-1	2.7 x 10^-12	1 x 10³	2.7 x 10^-8

Table A–4.—Activity-mass Relationships for Uranium
	Specific Activity
Uranium Enrichment ¹ wt % U-235 present	TBq/g	Ci/g
0.45	1.8 x 10 ⁻⁸	5.0 x 10 ⁻⁷
0.72	2.6 x 10 ⁻⁸	7.1 x 10 ⁻⁷
1	2.8 x 10 ⁻⁸	7.6 x 10 ⁻⁷
1.5	3.7 x 10 ⁻⁸	1.0 x 10 ⁻⁶
5	1.0 x 10 ⁻⁷	2.7 x 10 ⁻⁶
10	1.8 x 10 ⁻⁷	4.8 x 10 ⁻⁶
20	3.7 x 10 ⁻⁷	1.0 x 10 ⁻⁵
35	7.4 x 10 ⁻⁷	2.0 x 10 ⁻⁵
50	9.3 x 10 ⁻⁷	2.5 x 10 ⁻⁵
90	2.2 x 10 ⁻⁶	5.8 x 10⁻⁵
93	2.6 x 10 ⁻⁶	7.0 x 10 ⁻⁵
95	3.4 x 10 ⁻⁶	9.1 x 10 ⁻⁵

¹ The figures for uranium include representative values for the activity of the uranium–234 that is concentrated during the enrichment process.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 10. Energy 10 CFR Pt. 71, App. A—Determination of A 1 and A 2 - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-10-energy/cfr-pt-10-71-app-a/

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