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    Product Name laspec Alpha-1900S UV-Visible SpectroPhotoMeter YUEFENG 770S UV-Visible SpectroPhotometer
    Product Price In coming $2591.00
    Details Details
    Model comparison
    Spectral Type UV-Vis UV-Vis
    Optical Path Double-Beam Pseudo-Double-Beam
    Dispersion Grating Grating
    Detection Scanning Scanning
    Light Source Tungsten Deuterium Tungsten Deuterium
    Wavelength 190-1100nm 190-1100nm
    Accuracy ≤0.5nm ≤0.5nm
    Bandwidth ≤2nm
    Detector Silicon Photodiode
    Stray Light ≤0.05%T ≤0.2%T
    Parameter comparison
    wavelength Range 190-1100nm
    Optical inspection system Dual beam of light, CT light path, 1200 lines/mm laser holographic Diffraction grating Proportional double beam of light, 1200/mm Holographic grating
    Light spectrum Bandwidth 0.5nm, 1nm, 2nm, 4nm, 5nm 2nm
    Wavelength accuracy +/- 0.3Nm (full wavelength) +/- 0.1nm (656.1nm D2)
    Wavelength Repeatability ±0.1nm ≤0.2nm
    Photometric accuracy ±0.002A@0.5A, ±0.004A@1A, ±0.3%T(0-100%T)
    Luminosity Repeatability ±0.001A@0.5A, ±0.002A@1A, ±0.15%T(0-100%T) ≤0.2%(T)
    Photometric Range -0.3 to 4A; 0-200%T; -9999-9999C 0.0%(T)~200.0%(T)；-0.301~4.000(A)
    Baseline flatness ±0.0003A/hr (500nm, OA) ±0.002A(200nm~1090nm)
    wavelength setting Automatic, minimum resolution 0.1nm
    Operating Mode T, A, C, E
    Zero setting Automatic adjustment of 100% T and 0% T
    interface display 320 * 240 graphic LCD
    stray light ≤0.02%T @220nm, NaI; 360nm, NaNO2 ≤ 0.15% (T) (at 220 nm, as NaI) (at 360 nm, as NaNO2)
    Stability ±0.0003A/hr@500nm, 0A
    light source Imported tungsten halogen lamp, deuterium lamp
    Detector Imported silicon photodiode
    Dimension 660*580*270mm
    weight 29 kg
    data output 320 * 240 dot matrix graphic LCD screen; USB1.1 is connected to upper-layer software; PC operation Type can be provided