Gilson Verification Services upgrade of Screen Trays from ASTM E11 Compliance Grade to Inspection Grade. With Inspection Grade Verification, there is a 99% statistical confidence level that the standard deviation of the mesh openings is within the maximum allowed by ASTM E11.
Inspection Grade is ideal for applications requiring documentation of accuracy. Each Inspection Grade Screen Tray consists of a standard Screen Tray with added Inspection Grade Verification service.
Screen Trays fitted with backing cloth installed cannot be Verified.
To order Verification with new Screen Trays, see ASTM Testing Screen and Test-Master® Trays, ISO Testing Screen and Test-Master® Trays, ASTM Porta-Screen® Trays or ISO Porta-Screen® Trays.
- Upgrades Compliance Grade Screen Trays to Inspection Grade through Verification measurements and Inspection.
- Automatic scanning of the Screen Tray by a computerized NIST traceable optical comparator is backed up with a detailed statistical analysis.
- GV-61 Screen Tray Verification to ASTM E11 Inspection Grade