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Gage pressure. Pressure measured with respect to atmospheric pressure.


Gas. A substance which:
(a) at 50 °C has a vapour pressure greater than 300 kPa (3 bar); or
(b) is completely gaseous at 20 °C under standard pressure of 101.3 kPa;

Gas cartridge. Any non-refillable receptacle containing, under pressure, a gas or a mixture of gases. It may be fitted with a valve;

GHS. The first revised edition of the Globally Harmonized System of Classification and Labelling of Chemicals, published by the United Nations as document ST/SG/AC.10/30/Rev.2