... spectrophotometer,flame photometer,turbidity meter,whiteness,atomic absorption spectrophotometer) A & E Lab. Main Products: Atomic Absorption Spectrometer (AAS), Fluorescence Spectrophotometer, Bio-Spectrophotometer ... , Automatic Refractometer, Abbe Refractometer, PH/DDS/TDS Meter, etc.Main Products:1 Optical-Spectrum Instruments. Atomic Absorption Spectrometer (AAS) Fluorescence Spectrophotometer ...