1.1 This test method covers the determination of hydrogen sulfide (H 2 S) in gaseous fuels. It is applicable to the measurement of H 2 S in natural gas, liquefied petroleum gas (LPG), substitute natural gas, and mixtures of fuel gases. Air does not interfere. The applicable range is 0.1 to 16 parts per million by volume (ppm/v) (approximately 0.1 to 22 mg/m ) and may be extended to 100% H 2 S by manual or automatic volumetric dilution.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.