Sieve Calibration Standard 212 microns or No.70
Calibration Standard for 200mm (8") Diameter Sieves, NIST Traceable for 212μm (No.70); also suitable for 200μm and 224μm; 5 bottle set, 1.5g per bottle
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Calibration standards for 3-inch and 100mm diameter sieves are also available. Contact us for a quote.