JIS Z 8901 Class 4 Talc

Scope : This Japanese Industrial Standard specifies both: the test powders which can be used for the dust separatio n test of a dust separtation test of a dust separator or an air filter, for the function test of various testers, and for wear test; and the test particles, which can be used for the calibration of light-scattering automatic particle counter, the test of particle collecting rate for super high performance air filter, and the calibration of an automatic counter of particulate materials floating in air.
Test powders Class 7, Class 8, and Class 11 the quality of test powders Class7, Class 8, and Class 11 (KANTO LAOM) shall conform to the following items.
Particle Density: Particle Density shall be te value of 2.9 g/cm3 to 3.1 g/cm3 when measured according to the method in test