Filling packages under CLP

CLP is silent on how full a package should be filled, however this issue is covered by Transport of Dangerous Goods, so if you are transporting a package, then it is likely to be covered by Transport rules.  (This is likely to be the case whether the package is compliant with Transport, or with CLP instead).

ADR (covering road transport) states that packaging should be filled to less than 95% of its capacity (for solids) and 98% of its capacity (for liquids), that is there should be some ullage, and packages should not be filled completely.  (Obviously these rules do not apply to gases, which will fill a container completely).

In the absence of information on this subject within CLP, it would be sensible to comply with the Transport rules (where technically feasible).