Which statement is accurate regarding labeling a Category B package shipped for testing?

• A. It must include UN 3373 Diamond-on-point marking
• B. It must include a Class 6 hazard label
• C. It must include only the shipper name
• D. It may omit the contact information

Answer: (A)

For Category B shipments, the important labeling is the UN 3373 Diamond-on-point marking. This marking identifies the package as containing a Biological Substance, Category B, and signals to handlers that it requires the specific handling and regulatory treatment for Category B materials. It’s the standard indicator used on outer packaging to show the contents are not Category A, guiding precautions during transit.

The Class 6 hazard label isn’t the correct replacement for this situation; that label is associated with certain infectious substances (typically Category A) and would misrepresent the shipment’s category. Merely listing the shipper's name or omitting contact information would leave regulatory and safety details incomplete, since proper labeling and documentation are required to ensure safe and compliant transport.