IP 405: Commercial propane and butane - Analysis by gas chromatography

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  • Method adopted/last revised: 1994
  • Method reapproved: 2015
  • REF/ISBN: IP405-2937259
  • Status: Current
  • First printed in STM books: January 1994


This International Standard specifies a gas chromatographic method for the quantitative determination of hydrocarbons in liquefied petroleum gas (LPG), excluding components whose concentrations are below 0,1 % (m/m). It is applicable to the analysis of propane, butane and their commercial mixtures, which may include saturated and unsaturated C2, C3, C4 and C5 hydrocarbons. It does not apply to "on-line" chromatography.

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