IMDG Packing Group (PG I/II/III)
Packing-group assignment by hazard severity - drives packaging, marking and allowed-quantity thresholds.
Required packaging
UN-spec Type X or Y - 1.2×
Required markings
UN no. + class + PG II + proper shipping name
Formula, assumptions, and limits
PG tests from UN Manual of Tests and Criteria Part III. Some classes (2 Gases, 7 Radioactive) have different criteria; PG is mainly used for Classes 3, 4, 5, 6, 8, 9.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Packing Group (I / II / III) | - | IMDG Code 2.0.1.3 | |
| UN-rated drop-test packaging grade | - | UN Tests |