IP 123: Petroleum products — Determination of distillation characteristics at atmospheric pressure

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  • Method adopted/last revised: 2011
  • Method reapproved: 2014
  • REF/ISBN: IP123-2937125
  • Status: Current
  • First printed in STM books: February 2011


This International Standard specifies a laboratory test method, utilizing either manual or automated equipment, for determining the distillation characteristics of light and middle distillates derived from petroleum and having initial boiling points above 0 °C and end points below approximately 400 °C.

Light distillates are typically automotive engine petrols, automotive engine petrols with up to 10 % (V/V) ethanol and aviation petrols. Middle distillates are aviation turbine fuels, kerosenes, diesel, diesel with up to 20 % (V/V) FAME (fatty acid methylesters), burner fuels and marine fuels that have no appreciable quantities of residua.

NOTE For the purposes of this International Standard, “% (V/V)” is used to represent the volume fraction of a material.

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