UV-1900 double beam UV-Vis spectrophotometer instrument features * successful implementation of the stringent requirements of high accuracy and reliability of the measurement can meet the requirements of various applications that can be used in biological research, bio-industry, pharmaceutical analysis, pharmaceutical, teaching and research , environmental protection, food hygiene, clinical testing, health and epidemic prevention and other fields. * Wide wavelength range, which can meet various fields wavelength range requirements * 4nm, 2nm, 1nm, 0.5nm, 0.2nm, 0.1nm spectral bandwidth of six custom installation according to user requirements, to meet the stringent requirements of Pharmacopoeia * automatic design philosophy, the easiest means of measurement * LSI design greatly improves the scalability and reliability * Improved optimization of optical design, import source and receiver system has created a system of high performance and reliability * Rich measurement methods, with a wavelength scan, time scan, multi-wavelength measurement, multi-order derivative determination (optional), dual-wavelength, three wavelength (optional) DNA protein measurement (optional), and other measurement methods, can meet different measurement requirements, and on a 6-inch large-screen direct display based on user requirements * Optional hole rack, four with manual rack, manual Eighth rack, automatic Eighth frame, glass frame, test tube rack, 1cm colorimetric frame, 5cm than color frame, 10cm frame, etc. * colorimetric measurement data can be output through the printer with USB interface * can be powered down to save the measurement parameters and data, user-friendly control via PC * can achieve more accurate and flexible measurements, can meet different users demand for UV-1900 double beam UV-Vis spectrophotometer technical indicators and basic parameters * optical structure: * Dual beam wavelength range: 190 ~ 900nm * Spectral Bandwidth: 0.1,0.2,0.5,1.0,2.0,4.0nm * Wavelength accuracy: Wavelength reproducibility ± 0.3nm *: ≤0.1nm * Transmittance accuracy: ± 0.3% τ (0-100% τ) ± 0.0015A (0 ~ 0.5A) ± 0.002A (0.5A ~ 1A) * transmittance Repeatability: 0.1% τ * Stray light: ≤0.008% τ (220nm NaI, 340nm NaNO2) * Stability: 0.0005A / h (500nm after the warm-up) * Noise: ± 0.0002A (500nm after the warm-up) * baseline level straightness: ± 0.001A * Metering: transmittance, absorbance, concentration, energy * wavelength adjustment: Automatic adjustment * luminosity range: -4 ~ 4A * Display: six inches high brightness blue LCD screen * detector : Import photomultiplier * Source: Imported deuterium lamps, imported tungsten lamp * Power: AC 220V / 50Hz 110V / 60Hz * Power: 120W * Instrument Size: 650 × 530 × 230mm * Net weight: 28Kg UV-Vis spectrophotometer detailed parameters quote, please see: http: //www.njzh17.com/product_281_775.html more UV-Vis spectrophotometer products and other instrumentation parameters, quotes, please visit Nanjing Zhuoheng Scientific Instruments Inc. HOME: www.njzh17. com phone station: www.m.njzh17.com 24-hour service Tel: 15051803731 (Lujing Li), 13921438638 (Gujing Li) QQ: 994779756 (Caller enjoy more benefits) business: gas analysis, spectroscopy instruments, optical instruments, elemental analysis, chromatographic analysis, electrochemical analysis and other analytical instruments; centrifuges, incubators, shakers and other laboratory glass reactor infrastructure; various types of glass laboratory reagents; laboratory accessories supplies; undertake equipment maintenance services