This standard specifies the method for determining the explosion limit of flammable gases in air. This standard applies to the determination of the explosion limit of combustible gases in air under normal pressure.
GB/T 12474-2008 history
2009GB/T 12474-2008 Method for Determination of Explosive Limits of Combustible Gases in Air
1990GB/T 12474-1990 Method of test for explosion limits of combustible gases in air