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Introduction: According to international CIE1931,1976 and other relevant standards and national standards.The JZ-300 is a new economic and practical general colorimeter, We introduce the latest imported LED light source and sensor, it has stable, durable, the characteristics of the economy. The interface we design the menu type, because it is simple and easy to understand. Our JZ-300 is not only widely used on Quality department about the color difference, but also used on the school teaching, scientific research, color design. Application: Injection colors matched and quality control in production process Color-difference detection and color-difference control or printing process The color-difference analysis of spray paint and electroplate surface Color-difference of different area of the metal treating surface Color quality inspection of batch products outdoors On-line monitoring of color difference in production process Specification Lighting/light system::"45/0" Measuringaperture::Ø8mm Display model::L*a*b*、L*C*H*、∆E*ab、∆(L*a*b*)、∆(L*C*H*) Operating language::Simplified Chinese or English Measurement model::Single model, Average model Observe illuminant::D65 Standard illuminant::10° Repeatability:: Within △E*ab:0.1 standard deviation ( When the white calibration plates is measured 30 times, and averaged) Measurement spaceing:About 2 seconds Power source::4 AA-size battery or AC adapter Operating temperature::0-40℃(32-104℉);Relative humidity 85% or less Size(WxHxD):110 ×60 ×190mm Weight:310g(Without batteries) Standard Accessories:Plastic packing, protection cap, AC adapter, Software, USB cable, stainless steel box Optional accessories :Micro-printer