Which of the following is a requirement for packaging specimens under TDG regulations?

The correct requirement for packaging specimens under Transportation of Dangerous Goods (TDG) regulations is the use of primary and secondary leak-proof containers with absorbent material. This standard ensures that any potential leakage from the primary container is contained by the secondary container, thus minimizing the risk of exposure to hazardous materials during transportation. The absorbent material is crucial because it can soak up any spills or leaks, providing an additional layer of safety.

This packaging method is vital in protecting both transport personnel and the environment from the risks posed by hazardous specimens. Adhering to these regulations helps in maintaining compliance with legal standards and promoting safe transport practices. Proper packaging is essential not only for the integrity of the specimens being transported but also for preventing accidents that could arise from leaks or spills.