GENEQ > Biotechnology > HPLC

Fixed Wavelength Detector


FEATURES
  • Simple operation
  • Biocompatible - all wettable components constructed of PEEK,™ Teflon,™ or Tefzel™
  • High sensitivity with relatively low noise
  • Value priced

Finally a UV/Vis detector product line which meets the tight budgets of today’s economy. The DFW-20 and 21 are the first of a series of liquid chromatography detectors designed, not only to fit the tightest budget requirements, but light in weight, small footprint, and simple to use.

Designed for maximum flexibility and value price puts the DFW-20 and DFW-21 within the budgets of university as well as secondary school level activities. Its simpler operation is ideal for undergraduate and even scholastic chemistry classes where chemical instrumentation, and in particular separation science, is part of the curriculum. Further, the light weight of the detector and its small footprint make it ideal for applications requiring
transportability. This would include environmental testing, quality control procedures, and dedicated industrial processes.

SPECIFICATIONS
Wavelengths 254nm (DFW-20), 280nm (DFW-21); opt: 365, 420, 505
Lamp (DFW-20) Standard 6in. low pressure Hg
Lamp (DFW-21) 280nm phosphor; separate light sources for 365, 420, 505nm
Flow cells
  • Analytical: PEEK, 7mm pathlength, 13µL, 50 psi (standard)
  • Semi-Prep: PEEK, 2.5mm pathlength, 44µL
  • Preparative: 2.0mm pathlength, 4µL, 0.125 TFE tubing
Linearity > 2%
Drift < 5 x 10-4 AU/Hr.
Noise < ±0.5 x 10-4 AU (1 x 10-4 peak to peak) @ 254nm, const. temp.
Recorder output From 0.005 to 1.0 AU Full Scale
Integrator output 1.0 V/AU
Front panel Range selection; autozero; front panel event pushbutton for activating signal to recorder, (can be activated via optional signal from injector valve)
Rear panel Recorder/integrator output; flow cell and connections
Size 11.3" (L) x 7.5" (W) x 3.0" (H); 6lbs. (2.7kg)

CAT. NO. DESCRIPTION
DFW-20 254nm, Fixed Wavelength Detector, analytical
DFW-20C 254nm, Fixed Wavelength Detector,* analytical
DFW-21C 280nm, Fixed Wavelength Detector,* analytical
* New model, can be converted to other wavelengths