ISO 25139:2011 specifies a manual method for the determination of the concentration of methane emissions from stationary sources.ISO 25139:2011 specifies an independent method of measurement, which is validated for mass concentrations up to 1 500 mg/m3.
DS/EN ISO 25139:2011 history
2011DS/EN ISO 25139:2011 Stationary source emissions - Manual method for the determination of the methane concentration using gas chromatography