BS EN 24003:1993 Permeable sintered metal materials. Determination of bubble test pore size
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This International Standard specifies a method, known as the bubble test method, for the 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.