Vis is a long history, high sensitivity, good selectivity, versatile analytical instruments, scientific research in organic chemistry, biochemistry, pharmaceutical analysis, food testing, medicine and health, environmental protection, life sciences and other fields, production work have been widely used. V-1300 ultra-low stray light visible spectrophotometer, reproducible, high signal to noise ratio, the software fully functional, beautiful designs. The whole structure of the instrument are independent design, with independent intellectual property rights, the whole key performance indicators have reached similar foreign products to meet the diverse needs of the application of analytical work. Technical indicators and basic parameters * wavelength range: 320 ~ 1100nm * Spectral Bandwidth: 4nm * Wavelength Accuracy: ± 0.5nm * wavelength reproducibility: ≤0.2nm * Transmittance accuracy: ± 0.5% τ * Transmittance Repeatability: 0.2% τ * Stray light: ≤0.05% τ (340nm NaNO2) * Stability: 0.001A / 30min (after warm-500nm) * Metering: transmittance, absorbance, concentration, energy * wavelength adjustment: Automatic adjustment * luminosity range: -0.3 ~ 3A * Display: 128 * 64 LCD * Detector: import silicon LED * source: import tungsten lamp * Power: AC 220V / 50Hz 110V / 60Hz * Power: 120W * Instrument Size: 480 × 350 × 220mm * Net weight: 11Kg Instrument features single-chip microprocessor control * 128 * 64 LCD * large LCD display can display multiple sets of data * huge memory space to store multiple sets of data and curves * auto 0 transfer 100% automatic adjustment function * * Wrap wavelength filters, large sample pool (0.5mm ~ 100mm) * has a maximum ten o'clock standard calibration curve measurement function * built through direct input K, B factor to establish a standard curve for quantitative * Direct input measurement standards and corresponding concentration values ??establish a standard curve for quantitative measurement * can be powered down to save the standard curve parameter measurement set * with General Parallel Printer Interface, you can print the title bar, the measured data, curve parameters, sample point standard curve and curves * With USB interface * can achieve more accurate and flexible measurement requirements (optional) via PC control