... Spectrophotometer, Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting ... Range0~100.0%Measurement SystemR457 Blue Light WhitenessAccuracy0.1Zero Draft0.1/10minStability0.2/10minRepeatability0 ... & Weight405X325X330mm & 6.5kg Digital Whiteness Meter(Measurement System:R457 Blue Light Whiteness)