Sieve Calibration Standard 2.80mm or No.7
Calibration Standard for 200mm (8") Diameter Sieves, NIST Traceable for 2800μm (No.7); also suitable for 3150μm; 5 bottle set, 25.0g per bottle. Whitehouse Scientific SS419
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Calibration standards for 3-inch and 100mm diameter sieves are also available. Contact us for a quote.