What is the maximum quantity of a solid Category A Infectious substance permitted per package on a passenger aircraft?

What is the maximum quantity of a solid Category A Infectious substance permitted per package on a passenger aircraft?

• A. 50 mL
• B. 50 g
• C. 4 L
• D. 4 kg

Answer: (B)

In air transport, infectious substances are tightly regulated with per-package quantity limits to minimize risk if a package is damaged. For solids that are Category A infectious substances, the limit on a passenger aircraft is 50 grams per package. This small quantity helps limit the potential amount released in the unlikely event of a breach, which is especially important given the higher hazard of Category A materials. The measurement is by weight because the material is solid, not liquid. Other amounts listed would apply to different forms or scenarios (for example, liquids have different limits, and larger amounts are generally restricted on passenger aircraft), but for solid Category A substances, 50 grams per package is the standard limit.