Photo Diode Array Detector

The Evaporative Light scattering Detector Analytical 3000 is an universal detector for HPLC. It is used to analyze components which do not have UV absorption, cannot be separated with an isocratic solvent and must use a gradient elution, which cannot be used with a refractive index detector. Only mobile phases without any buffers should be used.

In contrast to other evaporative light scattering detectors all parts of the the 3000 detectors which come in contact with the sample are made of PTFE or glass. By this this parts are inert to common solvents and easy to clean. One more advantage of glass parts is the fact that contamination can be located easily.

The nebulization takes place in the glass nebulization chamber. From here the aerosol is guided into the evaporation chamber which is made of glass, too.

The solvent evaporated and only small sample particles reach the detection chamber. Here this particles pass a beam of bright light. By this the light is scatterd in all directions. The scattered light is detected by a photomultiplier in an angel of 120A . The signal is amplified and exported as the detector signal.