Gilson Reverification of Sieves confirms that your in-service sieves continue to meet ASTM or ISO specifications as they age.
Your sieves are shipped to our Verification Laboratory, where they undergo a process identical to the Verification of New Sieves. Gilson individually measures a specified number of openings in each test sieve using an NIST traceable optical comparator. The computerized system performs a statistical analysis of the measurements and provides a verification report to document that the sieve meets Inspection grade or Calibration grade ratings.
Sieves with backing cloth installed cannot be verified to Inspection or Calibration grade.
Sieve Reverification Process: