Packaging group concept is not applicable on classes 1 (explosives), 2 (gases compressed,liquefied or dissolved under pressure), 6.2 ( infectious substance) and 7 (radioactive materials)
Dangerous Goods have been divided into three packaging groups according to the degree of danger they present.
- Great danger – packaging group 1 (I)
- Medium danger – packaging group 2 (II)
- Minor danger – packaging group 3 (III)