Optical Performance Optical System: Littow type, Single beam, Grating system 1200l/mm Spectral Slitwidth: 4nm Wavelength Range:320-1100* nm Accuracy:±1 nm Repeatability:0.5 nm Stray Light:≤0.1%T@340nm Scan speed: fast, medium, slow	Photometric Performance Photometric Mode: Transmittance, Absorbance, Concentration Photometric Range:0-125.0%T,-0.0970-3.000A, 0-9999C Accuracy:±0.3％T（0-100%T） :± 0.002(0-0.5Abs) :± 0.004(.5-1Abs) (NIST930) Repeatability:0.2%T（0-100%T） 0.001(0-0.5Abs) 0.002(0.5-1Abs) Base line:±0.004A Drift:±0.002A/h（at 500nm after warm up 1 hour） Noise :±0.002A
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:2×202-line, 20 character backlighted LCD Power Requirement: 85-264VAC，50-60Hz Sample Compartment:100mm light beam for test Built in 4 position Cell Holder: 10mm Standard setup of Cells:10mmGlass cell 4 pcs Dimensions:475 ×420×180（mm） Net weight :8.5kg Gross weight:9.5kg