Specification Packaging Markings

Markings are placed on UN specification packaging to indicate that the packaging corresponds to a successful design type and complies with the manufacturing provisions. All single packaging and all outer packaging, including composite and combination packaging, that meet UN specifications must bear durable, legible, and appropriately sized and placed markings. Inner packagings are not required to be marked. Handwritten markings are not acceptable. Instead, the markings must be printed or embossed directly on the packaging.

The UN specification packaging marking must consist of the following:

1. The United Nations packaging symbol
2. The code number designating the types of packaging (1D is the code for a plywood drum)
3. The letter X, Y, or Z designating that the design type for the associated packing group has been successfully tested
4. A number indicating the relative density (for liquids) or the maximum gross weight (for solids and inner packagings)
5. A number indicating the hydraulic test pressure, shown in kPa, for liquids, or the letter "S" for solids and inner packagings
6. The last two digits of the year in which the packaging was manufactured
7. International Vehicle Registration Code (VRI), indicating the State authorizing the mark
8. Manufacturer's identifying mark

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