All U.S. Standard Sieves Dual Manufacturing produces are sold as ASTM E11 Compliant Sieves and are supplied with a free certificate stating all relevant facts associated with "Compliant Sieves".

Sieve Certification, Part #D-CERT
New Sieve Certification, Per A.S.T.M- E11 Section 7.2.2 An Inspection sieve certificate shall state at a minimum the value for the average aperture size, separately in both the warp and shute direction of the sieve cloth. A Certificate with this inspection data must be supplied. All of the procedures will be performed by highly skilled individuals using state-of-the-art Nikon Comparators.

Sieve Recertification, Part # D-ReCERT
Recertification-Taking in your used sieves and recertifying so that you are sure your sieves in use still conform to A.S.T.M. specs. Recertification sieves are supplied with our Certificate of inspection and conform to ASTM-E11, Section 7.2.2.

If at any point your sieve being recalibrated fails, you will not be charged for the recertification of that sieve. We will contact you and go over your options that will best suite your needs. All of the procedures will be performed by highly skilled individuals using state-of-the-art Nikon Comparators.

Sample Sieve Certification (PDF - 365KB)