IP 142: Determination of oxidation stability of lubricating grease — Oxygen pressure vessel method

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  • Method adopted/last revised: 1985
  • Method reapproved: 2015
  • REF/ISBN: IP142-2939444
  • Status: Current
  • First printed in STM books: February 1985


This document specifies a method of test for determining the resistance of lubricating greases to oxidation when stored statically in an oxygen atmosphere in a sealed system at an elevated temperature under conditions of test.

This method may be used for quality control to indicate batch-to-batch uniformity.

It is not intended for the prediction of the stability of greases under dynamic service conditions nor is it intended for the prediction of the stability of greases stored in commercial containers.

NOTE - For the purposes of this standard, the terms "% (m/m)" and "% (V/V)" are used to represent respectively the mass fraction and the volume fraction.

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