IP 435: Determination of the freezing point of aviation turbine fuels by the automatic phase transition method

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  • Method adopted/last revised: 2016
  • Method reapproved: None
  • REF/ISBN: IP435-2939444
  • Status: New
  • First printed in STM books: February 2016

1 Scope


This standard specifies a procedure for the determination
of the temperature below which solid
hydrocarbon crystals are present in aviation turbine
fuels. The procedure employs an automatic
instrument which uses the scatter of reflected light
to determine the presence and disappearance of
solid hydrocarbon crystals. The standard is
applicable to aviation turbine fuels with freezing
points in the range of −42 °C to −65 °C.
The test method can be used to determine values
outside this range but there is no precision for these
values.

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