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A coloured band on a cylinder's shoulder above a white or coloured body.
Also known as: Cylinder colour coding, EN 1089-3 colour code, Gas cylinder shoulder colour, Coloured top on a gas bottle
Under EN 1089-3 a medical gas cylinder's contents are identified by the shoulder colour, not the body, and the body colour is white for medical use regardless of gas. Colour coding alone has failed often enough that the physical pin index system exists as a backup.
Identifies the gas in a cylinder by the colour of its shoulder, under the EN 1089-3 scheme used across Europe.
Contexts: Medicine
Uses the body colour to indicate medical rather than industrial use — white for medical gases — with the shoulder alone carrying the identity of the gas.
Contexts: Medicine
Differs from schemes in other countries, notably the United States, so a cylinder colour read correctly in one country may mislead in another.
Contexts: Medicine
Is backed by the pin index safety system, a physical keying arrangement that exists because colour coding alone proved insufficient.
Contexts: Medicine
A cylindrical vessel with a distinctly coloured band occupying the curved shoulder at the top, above a body in a different colour.