... Atomic Absorption Spectrometer (AAS), Fluorescence Spectrophotometer, Bio-Spectrophotometer, UV Vis Spectrophotometer, Visible Spectrophotometer, Flame Photometer, Whiteness Meter, ... rotation<-15º, or optical rotation>+15º).Temperature Control Range15-30°CAccuracy+/-0.5°CRepeatabilitySample transmittance>1 ... Test Tube (50mm) Automatic Polarimeter (Touch screen, -89~+89, Temperature Control)