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Product description NR200 precision colorimeter features with 8/d structure that is very precise. 8mm measurement aperture makes it popular in many applications, such as fabrics, paper, plastic parts, building materials. CSCQ3 software helps perform color difference analysis, color difference cumulative analysis, chromaticity index, color sample database management, simulating object color, etc. Specifications: Viewing Geometry: 8/d Aperture: Φ8mm Detector: Silicon photoelectric diode Color Space: CIEL*a*b*C*h* CIEL*a*b* Color Difference Formula: △E*ab △L*a*b △E*C*h Light Source: D65 Light Source Device: LED blue light excitation Storage: 100pcs standards 20000pcs samples Repeatability: Standard deviation within ΔE*ab 0.08 Average of 30 measurements of standard white plate Data Interface: USB PC Software: CQCS3 color software Power Source: Rechargeable lithium-ion battery 3.7V@3200mAh Lamp Life: 3 years, more than 1 million measurements Charging Time: 8 hours Measurement Times Before Recharging: 3000 times in 8 hours Operating Temperature/Humidity Range: -10~40℃, relative humidity 0~85% with no condensation Weight: 500g Dimension: 205×70×100mm