Ask X3What does 49 CFR 173.125 (Class 4—Assignment of packing group) require?
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According to 49 CFR 173.125, the packing group for a Class 4 material is generally assigned in column (5) of the § 172.101 Table. If that table provides more than one packing group for a material, you must determine the correct packing group based on test results using the test methods in the UN Manual of Tests and Criteria and by applying the specific criteria outlined in 49 CFR 173.125 for Divisions 4.1, 4.2, and 4.3.
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