Double Beam UV-VIS Spectrophotometer 8 Cell Changer Feature: The True Double Beam UV-VIS spectrophotometer with advance circuit measurement and control system , make the instrument with hig realiability and low noise. Excellent software design and procedure, make instruments have stronger spectral data processing function;Automatically scam measures spectra, multi wavelength (I -3 Lamda) determination, kinetic determination, 1-3 curve fitting, 1-4 derivate spectra, access, display print spectra and analyze data. Powerful window based software platform user-friendly, powerful, easy to store or output. Unique installation of deuterium & Tungsten lamp, the design and working way of automatic light switch and finding the best location, allowing users to operate the instruments and maintain or replace light source in a more coinveninent, correct and safer way. Technical Specification : Optical System Double Beam, Grating 1200 lines/mn Wavelength Range 190 1100 nm Mode Basic/Quantitative/Wavelength Scan DNA Protein test/ Kinetics Spectral Bandwidth I nm Wavelength Accuracy 0.1 nm Wavelength Repeatability 0.1 nm Photometric Accuracy + 0.3 %T ( 0 100 %T Photometric Repeatability 0.1 %T (0 100 %T) Photometric Range -4 A 4.00A, 0 to 220 % T, 0-9999C Stray Light -C. 0.05 %T @ 220nm, 360nm Stability 0.001 A/h @ 500nm Baseline Flatness 0.001 A Noise 0.0005 A Scanning Speed Fast/Medium/Slow Wavelength Scanning Auto Keyboard Membrance keypad Light Source Deuterium &Tungsten lamp Display 320 * 240 LCD Photometric Mode T,A,C Detector Silicon Photodiode Output USB Port & Parallel Port (Printer) Power AC 220V/50 Hz or AC 110V/60 Hz Accessories Glass Cells-4, Quartz Cells-2, Software, USB Cable Cell Holder 8