00CS-300 : 300 microns or No.50
Calibration Standard for 200mm (8") Diameter Sieves, NIST Traceable for 300μm (No.50); also suitable for 315μm; 5 bottle set, 2.5g per bottle
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Calibration Standard for 200mm (8") Diameter Sieves, Aperture Size 300μm (No.50). Also suitable for 315μm sieves. Set of 5 bottles, 2.5g per bottle. Mean aperture sizes traceable to NIST. Single-shot bottles remove operator bias.