IP 131: Petroleum products - Gum content of light and middle distillate fuels - Jet evaporation method

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  • Method adopted/last revised: 2017
  • Method reapproved: None
  • REF/ISBN: IP131-2938621
  • Status: Current
  • First printed in STM books: April 2018

Scope 

This document specifies a method for determining the existent gum content of aviation fuels and the gum content of motor gasoline or other volatile distillates. It includes the determination of products containing ethanol (up to a volume fraction of 85 %) and ethertype oxygenates and deposit control additives.

For determination of gum content in automotive ethanol (E85) fuel, no precision data is available (see 14.1).

For non-aviation fuels, a procedure for the determination of the heptane-insoluble portion of the residue is also described.

CAUTION — This method is not intended for the testing of gasoline components, particularly those with a high percentage of low-boiling unsaturated compounds, as they can cause explosions during evaporation.

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