1,laboratory equipment,Atomic Absorption Spectrometer, 2,measure total dissolved solids and temperature ... graphite tube and enhance the analytical accuracy. Technical Specifications: Model AE-AA500 Optic SystemWavelength Range190nm-900nmMonochromator Czemy-Turner Configuration Spectral Bandwidth 0 ... <30% or 0.2nm ±0.02nmBaseline Stability 0.005A/30min Laboratory Equipment ( AE-AA500)