Daigger 8-Inch Testing Sieves 1/2 Height Stainless Steel Frame and Stainless Steel Wire are supplied with a certificate of compliance applicable to ASTM E 11 specifications bearing the serial number and ship date. Plus, each sieve is etched with the serial number and has a bar code label with date of manufacture, lot number of wire cloth, and ship date. The sieves are manufactured using a measurement system for the wire cloth that is traceable to NIST standards and labeled for traceability.The frames and wire mesh cloths of these sieves are made of stainless steel. Sieves measure 8" dia. x 1" ht.