Range : 340 to 960Resolution: 0.1%T, Abs .0001, Conc.1Output : %T:0to 100% Abs: 0to1.99, Conc: 0to 1999Detecor: Sillicon PhotodiodeLight Source: Tungsten halogen lampGratings : High Performance holographic grating systemSample holder: 10 mm path length, 10&50mm path lengthSpecial brand width: 5nmWavelength Resolution: 1nmWavelength Accuracy : +_2.5 nmRepeatability : +_2 nmDisplay :3 1/2 digit , 3 digit (Wavelength) LED displayPower supply : 230V , 10%AC , 50 HZ Glass part is available & Charges are extra.