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 TAC 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