3' Acrylic Frame Sieve, Stainless Mesh, No. 20 - Gilson Co.
Named after the Primary Sieve Size (850um) but also suitable for 800um & 900um Sieves. Unique microsphere method of sieve calibration. Mean aperture sizes traceable to NIST and NPL. Measure over 1 million apertures per minute. Typical calibration time of about 1 minute. Method analyses over 80% of the sieve surface.Get Price