... Lab. Main Products: Atomic Absorption Spectrometer (AAS), Fluorescence Spectrophotometer, Bio-Spectrophotometer, UV Vis Spectrophotometer, Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss ... ≤0.2Power SupplyPower adapter or batterySize & Weight345×385×170mm & 3kg Portable Whiteness Meter (WSB-1)