00CS-90 : 90 microns or No.170
Calibration Standard for 200mm (8") Diameter Sieves, NIST Traceable for 90μm (No.170); 5 bottle set, 1.0g per bottle
Calibration Standard for 200mm (8") Diameter Sieves, Aperture Size 90μm (No.170). Set of 5 bottles, 1.0g per bottle. Mean aperture sizes traceable to NIST. Single-shot bottles remove operator bias.