... lampWave Length340 to 800nm (single/double wavelength)Absorbance Range0~3.5AResolution0.0001Abs,SyringeIndependent sample needle, reagent needle ,automatic liquid sensor ,Trace volume ... a separate power switch, can be refrigerated 24 hoursOperation Systemfull automatic, DiscreteCalibrationlinearity/Non-linearity calibrationSoftwareWindows 2000 or morePower supply220V ,50HzWeight165KGWarrantyWe offer ...