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How to Read UN Markings

For Liquids:
Sample: UN 1A1/Y1.4/100/04/USA/NC1

1

Package Identification

1 Drums / Pails
2 Barrels
3 Jerricans
4 Boxes
5 Bags
6 Composite Packaging (i.e. Steel/Plastic)

A

Material

A Steel
B Aluminum
C Wood
G Fibre
H Plastic

1

Package Type

1 Closed Head
2 Open Head

Y

Signifies Packaging Group for Which the Package was Tested

X Groups I, II and III
Y Groups II and III
Z Group III

1.4
This number signifies the specific gravity for which the design type was tested.
100
This is the hydraulic test pressure in kilopascals (kPa).
4
Year of manufacture
USA
Country of origin
NC1
Name or symbol of manufacturer


For Solids:
Sample: UN 1A1/Y1.4/100/04/USA/NC1

1

Package Identification

1 Drums / Pails
2 Barrels
3 Jerricans
4 Boxes
5 Bags
6 Composite Packaging (i.e. Steel/Plastic)

A

Material

A Steel
B Aluminum
C Wood
G Fibre
H Plastic

1

Package Type

1 Closed Head
2 Open Head

Y

Signifies Packaging Group for Which the Package was Tested

X Groups I, II and III
Y Groups II and III
Z Group III

1.4
This number signifies the specific gravity for which the design type was tested.
100
This is the hydraulic test pressure in kilopascals (kPa).
4
Year of manufacture
USA
Country of origin
NC1
Name or symbol of manufacturer

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