Specifications Plate typ48-hole, 96-hole microplates or bars. Light sourcsingle light source, halogen tungsten lamp, with an average life expectancy â?¥5000 hours Detectorsilicon photocell Wave length400nm-750nm Optical filter standard 405, 450, 492, 630nm , other wavelengths can be optional Absorbance rang0.000-4.000abs Measurement modsingle-, dual-wavelength automatic measurement Calculation modopen type qualitative determination and quantitative analysis Repeatability0.3% Stability0.003abs Resolution0.001abs Linearity0.01 or 2% Reading spee6s/96well plate, single wavelength Vibration plate mod5 grade speeds(from weak to strong) can be set, time 0-240s adjustable Display10.4 inch large-screen lcd display, touch screen input Computer interfacusb printer interface , rs232 Printer external wide-line printer Power supplyac22022v, 50hz Operation languagenglish or chinese