Digital Whiteness Meter,Brightness Meter, Paper Whiteness Meter, Powder Whiteness Test, Tissue Whiteness Tester ... Spectrophotometer, Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point ... Automatic Refractometer, Abbe Refractometer, PH/DDS/TDS Meter, etc.Application:This instrument based on the ...