IP 387: Determination of filter blocking tendency

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  • Method adopted/last revised: 2017
  • Method reapproved: None
  • REF/ISBN: IP387-2939444
  • Status: New
  • First printed in STM books: February 2017

Scope

This standard specifies a method for the determination of the filter blocking tendency (FBT) and filterability of middle distillate fuel oils and nonpetroleum liquid fuels such as biodiesel, where the end use demands an exceptional degree of cleanliness. The method covers 3 procedures and associated filter types, and is applicable to fuels within the viscosity range of 1,5 mm2/s to 6,0 mm2/s at 40 °C.

A change in filtration performance after storage or pre-treatment, such as cold soaking, can be used to indicate potential filter blocking problems or small changes in fuel condition.

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