The DRK122 light transmittance haze meter is a computerized automatic measuring instrument designed according to the national standard of the People’s Republic of China GB2410-80 "transparent plastic light transmittance and haze test method" and the American Society for Testing and Materials standard ASTM D1003-61 (1997) . Applications: It is suitable for the determination of light transmittance, transmission haze, reflection haze, and reflectivity of all transparent and translucent parallel plane samples (plastic plates, sheets, plastic films, flat glass), and also suitable for liquid samples (water, beverages) , Medicament, coloring liquid, grease) turbidity measurement. Features: Ø Parallel lighting, hemispherical scattering, integrating sphere photoelectric receiving mode, computer automatic operating system and data processing system are adopted; Ø No knob operation, easy to use, and with standard printout pullout, automatically display the average value of multiple measurements of light transmittance/haze Ø The light transmittance result is displayed to 0.1%, the haze is displayed to 0.01%, there is no zero drift, and the confidence is strong; Ø The specific structure-open sample window is almost not limited by the sample size, and the measurement speed is fast; Ø Microcomputerized electronic circuit, high precision, with standardized data print output interface, can be supplied with program-controlled printer; Ø Equipped with thin-film magnetic clamps and liquid sample cups, which are convenient for testing, and a haze sheet is included with it, which is convenient for checking the action function of the instrument at any time. Product parameters: ² Sample window size: entering window radius of 25MM, exiting window radius of 21MM; ² Light source: C light source (DC12V/50W halogen tungsten lamp + color temperature film/color temperature 6774K) ² Receiver: silicon photocell + visual function correction film (in line with V(λ) standard value); ² Accuracy: light transmittance 0.1%; haze 0.01%; ² Repeatability: light transmittance 0.5%, haze ≤0.5%, 0.05% ² Measuring range: light transmittance 0-100.0%; haze 0--99.00% (0-30% absolute value, (30-99% relative value) ² Sample size: 50mm×50mm ² Liquid tank size: 50mm×50mm×10mm ² Instrument size: 740mm×270mm×300mm ² Power supply: 220V /50HZ ² Environmental conditions: 10-50°C Technical standard: GB 2410-80, ASTM D1033-61, JIS k7105-81 Product configuration: Standard configuration: one host, one power cord, and one manual.