68-21 Digital Hazemeter - Testing Machines Inc - #1

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Digital Hazemeter 68-21-00 The Digital Hazemeter measures the haze (light scattering) and the light transmitting properties of plastic sheets, film, glass, and liquid products. Measuring haze involves separating scattered light from directly transmitted light. The percentage of transmitted light which deviates more than 2.5 degrees from the incident beam by forward scattering is considered to be haze. Its unique optical design allows the evaluation of large or small specimens in a wide variety of industries. The Hazemeter features 0° degree illumination, diffuse viewing geometry for accurate measurement of haze, total luminous transmittance, and diffuse transmittance. The optical system eliminates the need for sphere-pivoting. Measurements can be made quickly as samples can be hand-held or placed at the measurement port. Thickness of the sample is also not a problem since source and receptor modules are spaced 90 mm apart. The sample is placed in holder at entrance to sphere. Readings are taken with the sphere in each of its two positions - one where the light trap is in the beam and the other where the beam falls entirely on the inner surface of the sphere. Calibration is automatically achieved when the microprocessor switch is activated. Similarly, the haze reading is displayed when the ‘press to read’ button is depressed. Below are examples of how the Hazemeter can be used for evaluating • Plastic films for packaging • Laminated car windshields • Translucency of signs or rear-projection screens • Translucency of ceramics • Evaluation of the effect of detergents in cleaning glass wear • Detection of flocculation in varnish or lacquer • Scratch resistance evaluation of plastic glazing materials or face shields (taber resistance) • Haze and transmittance of clear or colored plastic or glass • Haze and transmittance of petroleum products Applications • Adhesives • Automotive • Ceramics • Chemical • Coatings • Cosmetics • Detergents • Dyestuffs • Food • Glazing products • Printing Inks • Packaging materials • Petroleum • Pharmaceuticals • Plastics • Polishes • Resins • Varnish • Waxes Features • Integrated Digital readout • Easy to use: direct reading obtained quickly • Versatile: measure in the laboratory or in the plant • Immune to ambient light: sample compartment is light tight • Optical geometry: 0° degrees illumination with diffuse viewing • Resolution of 0.1% obtainable • Minimum sample size: 25.4 mm diameter