Which statement correctly describes the purpose of Class 1 compatibility groups?

• A. The compatibility groups identify what kind of explosive articles are compatible for transport
• B. The origin country of the explosive article
• C. The date of manufacture
• D. The packaging color

Answer: (B)

The main idea here is that Class 1 compatibility groups are about safe transport. They show which explosive articles can be packed together in the same package or transport unit without creating extra risk, based on how different explosives behave under transport conditions. This helps determine which items must be kept separate or grouped together to avoid interactions that could lead to unwanted initiation, detonation, or other hazards. It’s about compatibility and safe segregation during shipping, not where the item came from, when it was made, or what color the packaging is.