Combination packagings are authorized.
The general provisions of 4.1.1 and 4.1.3 shall be met.

Additional requirements
1. Packagings shall be designed and constructed to prevent the loss of water or alcohol content or the content of the phlegmatizer.
2. Packagings shall be so constructed and closed so as to avoid an explosive overpressure or pressure build-up of more than 300 kPa (3 bar).