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

Combination packagings consisting of inner metal cans of not more than 1 L capacity each and outer wooden boxes (4C1, 4C2, 4D or 4F) containing not more than 5 L of solution.

Additional provisions:
1. Metal cans shall be completely surrounded with absorbent cushioning material.
2. Wooden boxes shall be completely lined with suitable material impervious to water and nitroglycerin.