Specifies the method of measuring the pressure drop across a fluid filter under various conditions of flow. Two standards of measurement are specified: class A - for accurate evaluation for referee purposes - requiring laboratory conditions; class B - for evaluation for general purposes - requiring test facilities less stringent that laboratory conditions. Figure 1 shows an example for a suitable test circuit, and the typical reporting method is given in the table.

General information

  • Status :  Withdrawn
    Publication date : 1981-12
  • Edition : 1
    Number of pages : 7
  • :
    ISO/TC 131/SC 6
    Contamination control
  • 23.100.60
    Filters, seals and contamination of fluids

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.