ADR packing instruction P904
Heading in ADR: “P904 PACKING INSTRUCTION”
Genetically modified (micro)organisms UN 3245: 6.1.4-built packagings, or untested triple packaging with 100 mm outer and UN 3245 diamond mark.
Covers UN 3245. Either (1) packagings meeting the general rules cited and the construction requirements of 6.1.4, with suitable strong outers and, for inner packagings of combination packagings, design against accidental discharge; or (2) packagings not tested to Part 6 but consisting of a primary receptacle and secondary packaging (one of them leakproof for liquids or siftproof for solids), absorbent enough for all liquid contents, wrapped or separated fragile primaries, and an outer strong enough for its use with a smallest outside dimension of at least 100 mm. The outer must carry the UN 3245 diamond mark (sides at least 50 mm, 2 mm lines, 6 mm characters) on a contrasting background. Coolants: dry ice or liquid nitrogen follow 5.5.3, ice goes outside the secondary, secondaries are held in place, and ice requires a leakproof outer or overpack.
| Value | Applies when |
|---|---|
| 100 mm | minimum smallest external dimension of the outer, option (2) |
| 50 mm | minimum side length of the UN 3245 mark |
| 6 mm | minimum height of letters and numbers in the mark |
Refers to: 4.1.1.1; 4.1.1.2; 4.1.1.4; 4.1.1.8; 4.1.3; 6.1.4; 5.5.3.
Carried by 2 Table A entries
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 4.1.4.1, P904, page 140.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
ADR 2027 amendments (accepted, applying from 1 January 2027) are not yet reflected on this page.