This International Standard specifies a method, known asThe bubble test method, forThe determination of the pore size of permeable sintered powder metallurgical materials, i.e. filters, porous bearings, porous electrodes and other parts with interconnected porosity.NOTE —The bubble test shall be considered as a quality control test and not as a test for defining filter grades or determining exact pore size and pore size distribution.
EN 24003:1993 history
1993EN 24003:1993 Permeable sintered metal materials; determination of bubble test pore size (ISO 4003:1977)