Check the listing for details. Optically Diffuse Materials Transmittance Meter Densitometer 0 OD-6.000OD. Condition: New. Listed at 1056.99 USD. Optically Diffuse Materials Transmittance Meter Densitometer 0 OD-6.000ODOptically Diffuse Materials Transmittance Meter Densitometer 0 OD-6.000ODIntroductionLS117 densitometer is an instrument that can measure both optical density and light transmittance. The instrument adopt the diffuse transmission principle which is suitable for the optical density test of aluminized film, film, X-ray film, lens ink and other materials. The light transmittance test of opalescent translucent materials and frosted matte materials, such as zirconia, opalescent acrylic and so on. The light source of the instrument complies with the CIE photopic luminosity function and can pass the inspection of Chinese national metrological institute.Related knowledge of optical density: optical density, abbreviated as OD. It is defined as the logarithm of the ratio of incident light to transmitted light, or the logarithm of the light transmittance reciprocal. The calculation formula is OD = log10 (incident light / transmitted light) or OD = log10 (1 / light transmittance). Generally, when testing materials with very low light transmittance, it is difficult to compare the differences between the materials using the light transmittance value. The data will be more intuitive after converting into optical density values. ParametersLight transmittance measurement accuracy±1% (0%-50%) ±2% (50%-100%)Light transmittance resolution0.0005% (0%-10%) 0.005% (10% -100%)Optical density measurement range0.000OD-6.000ODOptical density measurement accuracy±0.02 (0-2.00OD) ±2% (2.00-6.00OD)Optical density resolution0.001 OD (0.00-2.00OD) 0.01 OD (2.00-4.00OD) 0.1 OD (4.00-6.00OD)Aperture2mmLight Source380nm-760nm, conforming to CIE photopic luminosity functionWeightAbout 576g (without battery)Power supply4*AAA alkaline dry batteryDisplay240*160 dot-matrixes LCDDimension148mm×76mm×26mm (L*W*H)Packing :No.DescriptionQuantityUnit1LS117 Optical Density Meter1pcs2AAA battery(not included) 4pcs3User Manual1pcs4Certificate / warranty card1pcs5Aluminum box1pcs6Packing box dimension 34*25*14 cm（L*W*H）1pcsPaymentShippingReturn policyContact us & WarrantyWorking timePaymentWe accept PayPal only.Payment must be received within 7 business days of auction closing. We ship to PayPals address only. 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