Code of Federal Regulations Title 49. Transportation § 49.173.435 Table of A 1 and A 2 values for radionuclides

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

The table of A₁ and A₂ values for radionuclides is as follows:

	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)․․․․․․․․․	7.0x10⁻¹	1.9x10¹	7.0x10⁻¹	1.9x10¹	1.5x10³	4.2x10⁴
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 x 10^-1	2.7	3.0 x 10^-3	8.1 x 10^-2	2.0 x 10 ¹	5.4 x 10 ²
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	1.9	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․․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	2.0x10⁻²	5.4x10⁻¹	3.0x10⁻⁴	8.1x10⁻³	1.6x10⁻⁴	4.2x10⁻³
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	1.9x10¹	7.0x10⁻¹	1.9x10¹	6.1x10⁴	1.6x10⁶
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	2.7x10¹	6.0x10⁻¹	1.6x10¹	3.4x10²	9.2x10³
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)․․․․․․․․․	4.0x10⁰	1.1x10²	2.0x10⁰	5.4x10¹	4.2x10⁴	1.1x10⁶
Kr-81․․․․․․․․․․․․․․․․	Krypton (36)․․․․․․․․․	4.0x10¹	1.1x10³	4.0x10¹	1.1x10³	7.8x10⁻⁴	2.1x10⁻²
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)(i)․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․	1.0	2.7 x 10 ¹	6.0 x 10^-1	1.6 x 10 ¹	1.8 x 10 ⁴	4.8 x 10 ⁵
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	6.7 x 10^–10	1.8 x 10^–8
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	8.5 x 10⁻¹⁰	2.3 x 10⁻⁸
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․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	5.0x10⁻¹	1.4x10¹	4.0x10⁻¹	1.1x10¹	1.1x10⁴	3.0x10⁵
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 Sec. 173.434	see Sec. 173.434
U (dep)․․․․․․․․․․․․․․	․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․	Unlimited	Unlimited	Unlimited	Unlimited	see Sec. 173.434	see Sec. 173.434
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 for these parent radionuclides include contributions from daughter nuclides with half-lives less than 10 days as listed in footnote (a) to Table 2 in the “IAEA Regulations for the Safe Transport of Radioactive Material, SSR–6” (IBR, see § 171.7 of this subchapter).

^b The values of A₁ and A₂ in curies (Ci) are approximate and for information only; the regulatory standard units are Terabecquerels (TBq), (see § 171.10).

^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 [Reserved by 79 FR 40615]

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

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Cite this article: FindLaw.com - Code of Federal Regulations Title 49. Transportation § 49.173.435 Table of A 1 and A 2 values for radionuclides - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-49-transportation/cfr-sect-49-173-435/

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Code of Federal Regulations Title 49. Transportation § 49.173.435 Table of A 1 and A 2 values for radionuclides

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