D-Star - Model DFL-10 -Fluorescence Detector

The new D-Star Instruments DFL-10 HPLC Fluorescence Detector provides the specificity and sensitivity of fluorescence detection at a price consistent with most low-cost UV detectors. Fluorescence is a specific technique. Since many more compounds can be analyzed by absorption methods and do not exhibit fluorescence, fluorescence detection is inherently selective. Nonetheless, fluorescence detection in HPLC is a very useful analytical technique for analyzing natural fluorophores (compounds exhibiting natural fluorescence) and other compounds which can be made to fluoresce by derivatizing them with a natural fluorescing agent. For samples with these characteristics, it is not unusual to see sensitivity levels improve 50-1000 fold over absorption chromatography analysis.

The new DFL-10 Fluorescence Detector is a highly sensitive detector for use in liquid chromatography as well as in non-chromatographic techniques such as flow injection analysis. The geometry of the DFL-10 optical system, including its specific flowcell, also permits the instrument to be used for nephelometry. The excitation lamp in the DFL-10 may be turned off independent of the operating electronics, permitting the instrument to be used for chemiluminescence and bioluminescence.

• Designed specifically as a detector for HPLC with an advanced design fl owe ell.
• User changeable excitation (EX) and emission (EM) filters to accommodate most applications.
• User Changeable Mercury,  LED and Tungsten lamps cover most UV and Visible applications.
• Standard Photomultiplier Tube (PMT) provides excellent UV and Visible sensitivity.
• Optional PMT for extended red and lower UV ranges.
• Selectable sensitivity ranges with automatic PMT gain.
• Front panel read out of fluorescence energy.
• Front panel read out of lamp energy.
• Front panel read out of high voltage as a PMT diagnostic.
• Front panel offset reading background fluorescence.
• Four user selectable rise times for signal filtering.
• Front panel and remote autozero function.
• Front panel lamp on/off control for Chemiluminescence and Bioluminescence analysis.