This International Standard specifies a manual method for the determination of the concentration of methane
emissions from stationary sources.
This International Standard specifies an independent method of measurement, which is validated for mass
concentrations up to 1 500 mg/m.
NOTE 1 An independent method of measurement is used for such purposes as calibration or validation of permanently
installed measuring systems.
NOTE 2 An “independent method of measurement” is termed “standard reference method (SRM)” in EN 14181.
BS EN ISO 25139:2011 Referenced Document
EN 15267-3 Air quality - Assessment of air quality monitoring equipment - Part 3: Performance criteria and test procedures for stationary automated measuring systems for continuous monitoring of emissions from stationary sources*, 2023-12-20 Update
ISO 9169 Air quality - Definition and determination of performance characteristics of an automatic measuring system
BS EN ISO 25139:2011 history
2011BS EN ISO 25139:2011 Stationary source emissions. Manual method for the determination of the methane concentration using gas chromatography