Dangerous Goods must be packed in good quality packaging which are constructed and so closed as to prevent leakage from any package. They must be able to withstand normal conditions of air transport including vibration and changes in temperature, humidity or pressure.
For packing purpose, some classes of dangerous goods are assigned to a packing group depending upon the degree of danger they represent:
Packing Group l - High danger
Packing Group ll - Medium danger
Packing Group lll - Low danger
Note
Packing groups do not apply to Classes 1, 2 and 7.