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IR4 Overview

IR4 is a dual wavelength infrared detector, which uses the principle of infrared absorption spectroscopy to measure the concentration and composition in Polyolefins.

IR4 is the detector used in all Polymer Char analytical instruments and was designed to determine the on-line concentration and composition in HPLC, GPC or to be coupled with other separation techniques like CRYSTAF, TREF, etc., and it has been showed to be 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. Thanks to this capability, IR4 can be used for applications in High Temperature GPC analyses like ethylene percent contents in Polypropylene copolymers, vinyl acetate in EVA, etc.

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