Photometric mode is a simple measurement mode of Absorbance (ABS) or Transmittance (%T) at fixed single or multiple wavelengths.   Spectrum mode provides spectral measurement at user-defined wavelength range (between 200nm and 1000nm, low & high limits of measurement result, and scanning speed (at 100-5000nm/min) . The measured spectra can be saved ,zoomed, tracked ,and picked of peaks and valleys for various data manipulation. ? Time Scan mode is to perform scanning of a sample at a fixed wavelength for user-defined time. Functions as to save, to zoom, to track, and to search peaks and valleys of the measured spectra as also featured. Kinetic mode provides application software for measurement of enzyme activity at fixed wavelength. Optional temperature control is available upon request. Quantitative mode measures and determines the concentration of an unknown sample at a specific wavelength with calibration curve created form standards. SP- 8001 incorporates a universal sample compartment that accommodates a complete line of accessories - single cell holder, single cell holder adapted for water circulation temperature control unit (optional) , 6-cell holder (optional) , flow-cell assembly (optional) , etc. Sample compartment versatile 10-100mm pathlength cuvette and 10-25mm diameter test tube. Change of cell chamber is quick and simple. Specifications CAT. No. ET-8001 Wavelength Range 波长范围 190-1100nm Bandwidth Pass光谱带宽 ∝2nm Wavelength Accuracy 光谱精度 ±0.5nm Monochromator Dual Detectors/ Split-Beam Wavelength Repeatability 波长重复性 ±0.2nm Photometric Range测量范围 -0.300 ~ 3,000 Abs Photometric Accuracy 测量精度 ±0.005Abs at 1.000Abs with ASTM method Stability漂移 Drifting 0.0003Abs /hr at 500nm after 1 hour warm-up Baseline Flatness基线 ±0.002Abs Stray Light杂散光 < 0.05 % at 340nm & 220nm by ASTM method Light Source光源 Deuterium lamp (UV range) & halogen lamp (Vis range) Source lamp change灯转换 Automatic自动 Detector检测器 Si photodiode Wavelength scan speed扫描速度 100~5000nm/min (user-programmable) Pathlength Variable at 10-100mm Display显示 Backlit LCD-adjustable contrast Interface Serial & parallel Power电源 AC 100/120/220/240V 50/60Hz Dimension (mm)尺寸 506(W) x 430(D) x 220(H) Weight重量 18kgs