Indian Standard for Gas Cylinder Color Code Identification of for Medical use
This standard applies to the identification of the contents of gas cylinders intended for medical use.
Gas Cylinders -Each cylinder shall be painted externally in the colours corresponding to its gaseous contents as shown in Table 1.
The identification colours to be applied to the valve end of the cylinder shall extend down the cylinder to the shoulder. In case of mixtures the colours for the gases constituting the mixture shall be applied in four segments, two of each colour (see Appendix A).
TABLE 1 COLOUR IDENTIFICATION OF MEDICAL GAS CYLINDERS
Pipelines and Tubing
The pipelines for distribution of medical gases in hospitals and visible connecting tubing of anaesthetic apparatus shall 6 e marked with bands at least at each end and at every joint by the colour appropriate for the gases, as shown in Table 1. The first colour band shall correspond to the appropriate colour under valve end colour and the second colour band to the appropriate colour under body colour as indicated in Table 1.
MARKING
Each cylinder shall be marked with the name of the gas it contains and with the chemical formula as shown in Table 1 (except in the case of ‘cyclopropane). The marking shall be at the valve end of the cylinder, and as close to the neck -as possible, and not on the cylindrical part of the body and in characters as large as possible but not smaller than 5 mm in height.
The stamps used shall have a concave surface and the indentation shall be neither too sharp nor of excessive depth.
AMENDMENT NO. 1 JUNE 2012 to IS 3933 : 1966
Aluminium Alloy Gas Cylinders — The body of the cylinder shall not be painted in case of Aluminium Alloy Cylinders as shown in Table 2. The identification colours to be applied to the valve end of the cylinder shall extend down the cylinder to the shoulder. In case of mixtures the colours for the gases constituting the mixture shall be applied in four segments, two of each colour (see Appendix B).
Table 2 Colour Identification of Medical Gas Aluminium Alloy Cylinders
References
IS 3933 : 1966 COLOUR IDENTIFICATION OF GAS CYLINDERS AND RELATED EQUIPMENT INTENDED FOR MEDICAL USE