For this regulation, the "packing group", of dangerous goods is—
(a) if a determination under section 29 (1) (d) (Determinations—dangerous goods and packaging) that the goods are of a stated packing group is in effect—the stated packing group; or
(b) if there is no determination under section 29 (1) (d) in effect in relation to the goods—the packing group determined for the goods in accordance with the ADG code.
Note The assignment of dangerous goods to a packing group indicates the degree of danger of, and the level of containment required for, the goods. The packing groups, and the degree of danger they indicate, are as follows:
• packing group I (substances presenting high danger);
• packing group II (substances presenting medium danger);
• packing group III (substances presenting low danger).
The packing group of a substance can be determined from the dangerous goods list, although in some cases it is also necessary to refer to the ADG code, ch 3.3 (the list identifies those cases).