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Dr Gary Lawrence, Dublin City University

WPI are my preferred supplier for tissue and cell recording instrumentation. In my experience, WPI representatives have an excellent level of technical expertise and they have always responded in a timely manner with the most helpful, patient and instructive advice to aid the development of the o...
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Deuterium/Halogen Fiber Light Source

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D4H Deuterium/Halogen Fiber Light Source D4H Deuterium/Halogen Fiber Light Source D4H Deuterium/Halogen Fiber Light Source (Back)

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  • UV/VIS/NIR continuous fiber optic light source
  • Wavelength range: 200-1700nm
  • Integrated shutter with switch and TTL control
  • SMA fiber optic connection
  • Separate UV and VIS bulb control
  • High output: twice the intensity (compared to conventional models)
  • High stability
  • Long Life Lamp: 2000 hours
  • External Control
  • Shutter Function

The D4H is a combined deuterium and halogen light source for UV/VIS and NIR applications. This light source is ideally suited to work with WPI’s spectrometer modules and sample cells. It supplies a continuous spectrum in the UV, VIS and NIR range from 200 nm to 1700 nm. The D4H is equipped with an integrated electrical shutter, which can be controlled by a switch or a TTL signal.


  • Matched deuterium and halogen bulbs
  • Matched optical output for WPI's flow cells and fiber optic probes
  • Ultra Low drift < 1 mAU/h @ 254 nm
  • Simple exchange of light bulbs


  • UV/VIS/NIR absorbance spectroscopy
  • Excitation light source for fluorescence applications
  • Colored Dissolved Organic Matter (CDOM) detection in seawater
  • Nutrient Analysis in fresh water, drinking water and seawater using WPI's LWCCs
  • Protein detection using WPI's V-Vette or DIP UV MINI fiber optic probes




Application UV/VIS/NIR
Spectral Range 200—1700 nm
Deuterium Lamp Life 2000 hr
Tungsten/Halogen Lamp Life 2000 hr
Stability 1-2 mAU/h
Drift <1 mAU/h
Power Consumption 140 W
Power Requirements 110/240V, 50-60Hz, 1A
Shutter / TTL Trigger Yes
Max Fiber Output 1000 µm
Connections SMA
Shipping Weight 6 kg
Dimensions (W/H/L) 17.8 x 15.7 x 25 cm
Notes *Lamp life is dependent upon internal power settings.




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University College London
Imperial College
University of Cambridge
University of Oxford

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