What is Category B for TDG?

Category B under the Transportation of Dangerous Goods (TDG) regulations refers specifically to biological substances that are capable of causing disease in humans or animals. This includes blood products that may test positive for infectious agents, as well as certain bacterial and fungal cultures that have the potential to be pathogenic.

This classification is crucial for ensuring that materials posing a risk to public health and safety are handled, stored, and transported in compliance with safety regulations. This helps mitigate risks associated with the accidental release or exposure to these potentially infectious materials during transport.

In contrast, the other options describe materials that do not fall under the TDG regulations associated with infectious substances. Non-infectious materials, laboratory waste, and sample materials without hazardous properties are either considered safe for general handling or are categorized differently based on their nature and associated risks, therefore, they do not meet the criteria for Category B designation.