Intermediate Bulk Containers Code

The following table outlines the sequence of numbers and letters used to describe a UN IBC.

11 — rigid, designed for solids, loaded or unloaded by gravity

21 — rigid, designed for solids, loaded or unloaded under pressure > 10 kPa

13 — flexible, designed for solids, loaded or unloaded by gravity

31 — rigid, designed for liquids, loaded or unloaded by gravity
A — steel

B — aluminum

C — natural wood

D — plywood

F — reconstituted wood

G — fibreboard

H — plastic or rubber

L — textile

M — paper

N — metal other than steel or aluminum

1 — rigid inner receptacle (Composite IBC only)

2 — flexible inner receptacle (Composite IBC only)