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 1500mg/m3.
NOTE1 An independent method of measurement is used for such purposes as calibration or validation of permanently installed measuring systems.
NOTE2 An “independent method of measurement?? is termed “standard reference method (SRM)?? in EN14181[5].