00CS-53 : 53 microns or No.270
Calibration Standard for 200mm (8") Diameter Sieves, NIST Traceable for 53μm (No.270); also suitable for 56μm; 5 bottle set, 1.0g per bottle
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Calibration Standard for 200mm (8") Diameter Sieves, Aperture Size 53μm (No.270). Also suitable for 56μm sieves. Set of 5 bottles, 1.0g per bottle. Mean aperture sizes traceable to NIST. Single-shot bottles remove operator bias.