Abstract Preview

This document explains the use of the two acceptable methods of reporting particle size, µm(c) and µm(b), that are defined in ISO 11171:2016. It also explains the reasons for the existence of two alternative size reporting methods and its implications with respect to particle count and filter Beta Ratio data.


General information

  • Status :  Published
    Publication date : 2019-09
  • Edition : 1
    Number of pages : 8
  • :
    ISO/TC 131/SC 6
    Contamination control
  • 23.100.60
    Filters, seals and contamination of fluids

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