What is a Fisher Sub-sieve sizer?201-15

What is a Fisher Sub-sieve sizer?201-15

HMK-22 Fisher sub sieve sizer by HMKTest

The fisher sub sieve sizer is a kind of analytic instrument that measures the particle size of dry powders. It is composed of air pump, pressure stabilizer, dryer, U-shaped manometer and so on. The instrument uses an air permeability method pioneered by Fisher Scientific in the United States to measure powders such as magnetic, hardalloy, metallurgical, etc. that cannot be measured by ordinary particle size measurement methods.