Combination packagings are allowed.

Part 4, Chapter 1 requirements must be met, including:

1) Compatibility requirements

- Substances must be compatible with their packagings as required by 4;1.1.3.

- Metal packagings must be corrosion resistant or be protected against corrosion for
 substances with a Class 8 subsidiary hazard.

2) Closure requirements

- Closures must meet the requirements of 4;1.1.4.

Cylinders as permitted by 4;2.7 are allowed.

Note: Liquids having a vapour inhalation toxicity of Packing Group I are forbidden on cargo
 aircraft.

Liquids having a mist inhalation toxicity of Packing Group I  may be carried on cargo aircraft providing they are packed in accordance with the packing instructions for the Packing Group I substance and the maximum net quantity per package does not exceed 5 L, except where the limit specified in column 13 of Table 3-1 is less than 5 L, in which case the limit specified in column 13 applies.