Packing Groups (I, II, III)

DOT classifications indicating the danger level of hazardous materials, determining container requirements.

Packing Groups are DOT classifications that indicate the degree of danger of hazardous materials. Packing Group I is high danger, II is medium danger, and III is low danger. Most UN-certified 5-gallon pails are rated for Packing Groups II and III. The packing group determines which container certification level (X, Y, or Z) is required.