For applications when accuracy or documentation of test results is critical, Gilson ISO Sieves can be upgraded from Compliance Grade to Inspection Grade. Inspection Sieves have a 99% confidence level that the standard deviation of the sieve openings is within the maximum under ISO standards.
A prescribed number of openings of each sieve are individually measured using an NIST traceable optical comparator before shipment. Computerized scanning of the sieve produces a statistical analysis backed by documentation to Inspection Grade.
To order Inspection Grade with new sieves, see ISO Test Sieves. Sieves with backing cloth installed cannot be verified to Inspection or Calibration Grade.
- Upgrades ISO 565 and ISO 3310-1 Compliance Grade Sieves to Inspection Grade through Verification measurements and inspection
- Automatic scanning of the sieve by a computerized NIST traceable optical comparator, with certificate of documentation to Inspection Grade
- GV-62 ISO 565 and ISO 3310-1 Test Sieve Verification to Inspection Grade