Doc. 177/20Medical Gas Cylinders Colour Coding

This document covers the colour coding of cylinders used for medicinal and medical gas use within Europe where European (EN) standards are applied. It may also be used in other countries or territories, where there is no national colour coding standard.

It may also be applied for such gases used as Active Pharmaceutical Ingredient (API) and excipients, used in the pharmaceutical industry.

The purpose of this document is to provide guidance to all suppliers of medical gas cylinders on how to apply the colour coding principles outlined in the European Standard EN 1089-3 (Gas cylinder identification (excluding LPG) - Part 3: Colour coding).

It is also intended that this document shall provide guidance to national Regulatory Authorities about the correct use of colour coding to identify the gas contained in a medical gas cylinder.

The document is intended to be used by anyone who is involved with the specification, supply and use of gas cylinders used for medical and medicinal gas.