... Main Products: Atomic Absorption Spectrometer (AAS), Fluorescence Spectrophotometer, Bio-Spectrophotometer, UV Vis Spectrophotometer, Visible Spectrophotometer, Flame Photometer, ... Hotplate, Mixer, PCR, Oven, etc.WSB-1 Portable Whiteness Meter WSB-1 Characteristics:² Compact in size, ... ≤0.2Power SupplyPower adapter or batterySize & Weight345×385×170mm & 3kgProduct Show: WSB-1 Portable Whiteness Tester