In May of 2009, D.O.T issued an official interpretation on how to remain in compliance when switching box makers on a UN Certified box for shipping hazardous materials. Essentially there as 3 choices when a shipper of hazardous materials wants to switch to a new box manufacturer.
- The box manufacturer must mark the box with their name or symbol identifying them as the manufacturer of the box.
- In order to continue using the third party lab mark, authorization must be received from the third party lab certifying the package
- Re-test the package with the original third-party lab