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Detectors for CRYSTAF-QC
Here are described the detectors available for TREF instrument:
Infrared Detector IR4
IR4 is the standard detector incorporated by default in all the Polymer Char analytical instruments in its OEM version. IR4 is a dual wavelength stand-alone infrared detector, which uses the principle of infrared absorption spectroscopy to measure the concentration and composition in polyolefins.
IR4 is designed to measure on-line concentration and composition in HPLC, GPC or to couple it with other separation techniques like CRYSTAF, TREF, etc., and it has been proved as the most appropriate detector for polyolefins.
When adding a composition or a carbonyls sensor, other useful information can be obtained in addition to the concentration.