... , Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting ... /TDS Meter, etc.Application:This instrument based on the principle of photoelectric effect & D65 light source ... Range0~100.0%Measurement SystemR457 Blue Light WhitenessAccuracy0.1Zero Draft0.1/10minStability0.2/10minRepeatability0 ...