Optical Performance Optical System: Littow type, Single beam, Grating system 1200l/mm Spectral Slitwidth: 5nm Wavelength Range:200-1000 nm Accuracy:±2 nm Repeatability:1nm Stray Light:≤0.5%T220&340nm Scan speed: fast, medium, slow	Photometric Performance Photometric Mode: Transmittance Absorbance Concentration Photometric Range:0-125.0%T,-0.097-3.000A, 0-9999C Accuracy:±0.5％T（0-100%T） :± 0.004(0-0.5Abs) :± 0.008(0.5-1Abs) (NIST930) Repeatability:0.3%T（0-100%T） :0.002(0-0.5Abs) 0.004(0.5-1Abs) Base line:±0.004A Drift:±0.004A/h（at 500nm after warm up 1 hour） Noise: :±0.004A
Main Functions Allowed establish standard curve with more than 20 Standards. Allowed save more than 60 standard curves 100%T:Auto 0%T:Auto Auto self-test wavelength light source and filter Data Output: Analog RS-232C PC Controlled Required: Win-spec.3.33EN Software Win-spec 3.33EN(option): Spectrum scanning Abs/T%/Conc Measurement Standard curve Time scanning	Specification Display:2 ×20 2-line, 20 character backlighted LCD Power Requirement:110220VAC，50-60Hz :±10% Sample Compartment: 100mm light beam for test Built in 4 position Cell Holder: 10mm Dimensions:475×420 ×180（mm） Net weight : 11kg Gross weight: 14kg