Dangerous Goods Classification Confusion: UN 3373 Biological Substance, Category B

By Michael Gotz

In the previous blog post “Infectious Biologicals Category A and B - Classification Guidelines”, I provided definitions of Infectious Biologicals Category A and B and some basic guidelines on how to classify your shipments. These definitions are clear and helpful when you know that your shipment contains pathogens. In that case, it is either on the list for Category A, or if it is not, then it is classified as Category B. You can find more information about classification guidelines in our free White Paper "How to Classify Biological Substances for Transport as Dangerous Goods".