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Introduction: The DR-350 is design and developed according to international CIE1931, 1976 and other relevant standards at home and abroad, it is a new economic and practical general colorimeter, we introduce the latest imported LED light source and sensor from other countries, and 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 DR-350 is not only widely used on Quality department to test the color difference, but also used on the school teaching, scientific research, and color design. Main functions of the software: ◇ The color difference data analysis about the standard and sample ◇ Color simulation, color difference chart, Batch ◇ Analysis of the color difference histogram ◇ Save and callout the data from data base ◇ Save and callout the data from data base ◇ Print the color quality chart ◇ Download the instrument's data to the computer Specification Lighting/light system::45/0 Measuringaperture::Ø8mm Operating language::Simplified Chinese, Traditional Chinese, English Display model::L*a*b*、L*C*H*、XYZ、∆E*ab、∆(L*a*b*)、∆(L*C*H*)、∆XYZ Storage space::Standard: 50 sets, 30 sets color difference data under a standard data Standard illuminant::D65、D50、F11、 C、 Repeatability::Standard calibration: within△E*ab≤0.08 :(When the white calibration plates measured 30 times, and then averaged) Measurement spacing::About 2 seconds Calibration::White calibration, Zero cablibration Power source::4 AA-size batteries or AC adapter Operating temperature::0- 40℃, (32 -104℉); Relative humidity 85% or less Size(WxHxD)::110 ×60 ×190mm Weight::330g(Without batteries) Standard Accessories::Bag, Protection cap, Software, AC adapter, USB cable, Instrument, Hard case, Calibration plateOptional accessory::Micro-printer