W.S. Tyler provides Test Sieves in three grades:

• Standard: Supplied with a Certificate of Compliance. Equal to ASTM E11 Compliance Sieve.

• Certified: Supplied with NIST traceable histogram. Equal to ASTM E11 Inspection Sieve. See Sieve Analysis and Calibration for more information.

• Certified-PLUS: Supplied with NIST traceable histogram. Equal to ASTM E11 Calibration Sieve. See Sieve Analysis and Calibration for more information.