This Standard applies to packages that, in general, have a maximum net weight of 400 kg or a maximum capacity of 250 L. The International Maritime Dangerous Goods (IMDG) Code provides for the use of drums up to 450 L, but these should not weigh more than 400 kg. (See IMO IMDG Code.) The Standard may be extended to cover containers over 450 L constructed as specified in this Standard.