DW-L7 front left
DW-L7 back
DW-L7 front
DW-L7 outlook
DW-L7 right
DW-L7 sample holder
DW-L7 screen
DW-L7 front right
  • DW-L7 front left
  • DW-L7 back
  • DW-L7 front
  • DW-L7 outlook
  • DW-L7 right
  • DW-L7 sample holder
  • DW-L7 screen
  • DW-L7 front right

    • DW-L7 Double Beam UV-VIS Spectrophotometer

    DW-L7 double beam UV-VIS spectrophotometers adopt double beam optical system, and blazed holographic gratings. 

    They have outstanding test precision and very competitive prices. 8-inch color touch-screen, cutting-edge user interface, powerful functions, and easy operation. 
    With powerful functions, the equipment shows great performance in qualitative and quantitative testing, such as: 
    ● Full-spectrum scanning 
    ● Linear regression 
    ● Detailed spectrum scanning
    ● Concentration on direct reading 
    ● Time-based kinetics determination 
    ● Peak / Valley detecting 
    ● GOTO λ 
    ● Multi-wavelength measurement 

    DW-L7 Manual
    DW-L7 Brochure

    Features of DW-L7 Double Beam UV-VIS Spectrophotometer

    The equipment is designed with a sophisticated power protection system. With a high capacity of internal memory, it can store testing results, scanned images, regression equations, and correction data. Therefore, it follows a fast initialization when the power is on. 
    The instrument can draw curves from spectral scanning, fixed wavelength time-based scanning and linear regression. 
    With a USB COM port, the device can be connected to a PC, which can not only enhance the performance in data testing and spectrum scanning but also expand the memory to save more testing results.

    • Double beam optical system 
    • 8-inch color touch-screen 
    • Automatic zero and full-scale adjustment 
    • Automatic wavelength settings 
    • Equipped with USB COM port 
    • UV WIN8 Spectrum Data Processing Software optional

    Specifications of DW-L7 Double Beam UV-VIS Spectrophotometer

    Model DW-L7
    Photometry Double Beam
    Monochromator Type Czerny-Turner
    Focal Length 160mm
    Grating 1200 lines/mm
    Detector Silicon Photocell
    Spectrum Bandwidth 1.8nm
    Wavelength Setting 8-inch color touch-screen
    Wavelength Range 190-1100nm
    Wavelength Accuracy ±0.3nm
    Wavelength Repeatability ≤0.1nm
    Scanning Speed Fast-Medium-Slow
    Stray Light ≤0.03%T (at 220nm NaI, 360nm NaNo2)
    Photometric Range 0.0-200.0% T
    0.301-4.000 A
    0.000-9999 C
    Photometric Accuracy ±0.3% T
    ±0.004 Abs (0-0.A)
    ±0.008 Abs (0.5-A)
    Photometric Repeatability ≤0.15% T
    0.001 Abs (0-0.5A)
    0.002 Abs (0.5-1A)
    Baseline ≤±0.002 A(200-1090nm)
    Noise 100% (T) noise≤0.15%(T), 0% (T) noise≤0.1%(T)
    Drifting ≤0.0009 Abs/h (250nm and 500nm after 2h warm up)
    Power AC220V±22V 50Hz±1Hz, 200W
    Packaging Size 710mm X 590mm X 505mm 0.21M3 36kg

    Standard Accessories of DW-L7 Double Beam UV-VIS Spectrophotometer

    • Operation manual 1pc
    • Glass cuvette 10mm 4pcs
    • Quartz cuvette 10mm 2pcs
    • Power cable 1pc
    • Fuse 2pcs
    • Cuvette holder 10mm

    Optional Accessories of DW-L7 Double Beam UV-VIS Spectrophotometer

    • UV WIN8 station pro software
    • NO optional cuvette holder