Class 16 Calcium Carbonate Heavy

The scope of this Japanese Industrial Standard includes both the test powders, which can be used for the dust separation test of an air filter or dust separator, the function test of various testers, and the wear test, and the test particles, which can be used for the calibration of a light-scattering automatic particle counter, the particle collecting rate test for a super high performance air filter, and the calibration of an automatic counter of particulate materials floating in the air.