The following packagings are authorized, provided that the general provisions of 4.1.1 and 4.1.3 are met:

Combination packagings

Outer packagings:
Boxes (4A, 4B, 4N, 4C1, 4C2, 4D or 4F)
Maximum net mass: 75 kg

Inner packagings:
  (i) hermetically sealed metal cans, with a maximum net mass of 15kg; or
 (ii) glass inner packagings cushioned on all sides with dry, absorbent, non-combustible material in a quantity sufficient to absorb the entire contents with a maximum net mass of 2 kg; or

These packagings shall be capable of passing the leakproofness test specified in 6.1.5.4 at the packing group II performance level.