Visible Spectrophotometer: 1)Optical System:Littow type, Single beam, Grating system 1200l/mm 2)Wavelength Range:320-1000 nm Visible Spectrophotometer:1)Optical System:Littow type, Single beam, Grating system 1200l/mm2)Wavelength Range:320-1000 nmProduct InformationModel: SP-2100Optical Performance Optical System:Littow type, Single beam, Grating system 1200l/mmSpectral Slitwidth:4nmWavelength ...