Delaware Code Title 16. Health and Safety § 7202. Unlawful use or refilling of containers

(a) No person except the owner thereof or person authorized in writing by the owner shall fill or refill with liquefied petroleum gas, or any other gas or compound, a liquefied petroleum gas container, or buy, sell, offer for sale, give, take, loan, deliver or permit to be delivered or otherwise use, dispose of or traffic in a liquefied petroleum gas container or containers if the container bears upon the surface thereof in plainly legible characters the name, initials, mark or other device of the owner, nor shall any person other than the owner of a liquefied petroleum gas container or a person authorized in writing by the owner deface, erase, obliterate, cover up or otherwise remove or conceal any name, mark, initial or device thereon.

(b) It shall be unlawful for any person to fill a liquefied petroleum gas container in excess of the amount permitted in the National Fire Protection Association Standard 58, The Liquefied Petroleum Gas Code; or to fill a liquefied petroleum gas container on the property of any person that is not equipped with a fill tube or gauge; provided that a liquefied petroleum gas container may be filled by weight if the liquefied petroleum gas container is weighed before and after filling.