We do not have a published specification. If we did it would vary based on the Haze Value. Please note that Haze Standards are usually assigned by either ISO14782 or ASTM D1003 Procedure A compliant instruments. The UltraScanVis is an ASTM D1003 Procedure B compliant instrument. Expect to see greater variance for Haze standards with value 5 and under than for Haze standards with value 10 and higher.