This AIR explains the meaning of "ABSOLUTE" and "NOMINAL" ratings which are used to describe liquid filter element physical characteristics. A set of standard filter ratings and methods of determination to further describe an element performance are also included. These data are only applicable to a system in which the system liquid wets the filter element.
SAE AIR887-1968 history
2021SAE AIR887C-2021 Liquid Filter Ratings, Parameters and Tests
2011SAE AIR887A-2011 LIQUID FILTER RATINGS, PARAMETERS AND TESTS
2008SAE AIR887C-2008 Liquid Filter Ratings, Parameters and Tests
1993SAE AIR887B-1993 Liquid Filter Ratings@ Parameters and Tests