According to Packing Instruction 954, what are the minimum outer dimensions of a dry ice package?

• A. 4 mm x 4 mm
• B. 100 mm x 100 mm
• C. 500 mm x 500 mm
• D. There are no minimum dimension requirements for dry ice packages

Answer: (D)

There are no minimum outer dimension requirements for dry ice packages under Packing Instruction 954. The standard is performance-based, focusing on how the package must perform and be marked, rather than on a fixed size. Specifically, the outer packaging must be appropriate rigid packaging capable of withstanding the required tests, prevent leakage or excessive venting, and accommodate the dry ice and contents safely. It also requires proper labeling and documentation and limits on how much dry ice can be used with the contents to manage sublimation and pressure. Because there isn’t a fixed minimum size set by the instruction, the numeric dimension options don’t apply.