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Transparency

haze-gard dual

Two Standard Methods in one Unit

The haze-gard dual objectively measures Total Trans mit -tance and Transmission Haze according to two inter nationalspecifications:–ISO 13468Compensation method –ASTM D 1003Non-compensated method

Fast Measurement of a Variety of Samples Precise and Reliable Readings – Any time

Open sample area for small and large specimens Foot switch and automatic measurement allow hands-free operationBuilt-in statistics with average, standard deviation,coefficient of variance, and min/maxLarge storage capacity and data transfer to a printer orPC for professional documentationOperation in English, German, French, Spanish, andItalian - switchable Total Transmittance and Transmission Haze in one unitReference beam, self-diagnosis and enclosed opticsguarantee accurate readingsReady for measurement without warm-up time Automatic and long-term calibration guarantee reliablereadings CalibrationMeasurementSample

ASTM D 1003

Measurement conditions are different during calibration and actual measurement.During calibration, part of the light escapes through theopen entrance port. While taking a measurement, the entrance port is covered with the sample. Thus, the amount of light in the sphere is increased by the light reflected at the sample surface. No compensation:Different Sphere Efficiency

ISO 13468

CalibrationMeasurementSample Measurement conditions are kept equal during calibration and measurement due to an additional opening in the sphere.During calibration the sample is placed at the compen sationport. For the actual measurement, the sample is changed to the entrance port. Thus, the so-called sphere efficiency is independent of the reflection properties of the sample. Note: Differences between the two methods can be approxi -mately 2 % Total Transmittance on clear, glossy samples. Compensation Port:Same Sphere Efficiency 58

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