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.

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IR5 MCT is a stand-alone infrared detector with a flow through cell, which incorporates interference filters at five different wavelengths and a thermoelectrically cooled MCT detector with a high sensitivity (no liquid Nitrogen required).

IR5 MCT is designed to determine concentration and composition on-line in HPLC, GPC or to couple it with other separation techniques such as CRYSTAF, TREF, CEF or CFC.

When attached to a high temperature GPC for the analysis of polyolefins, the IR5 MCT detector provides excellent sensitivity and baseline stability in both concentration and composition (branch content) signals. To couple an IR5 with a GPC instrument is an ideal combination for measuring very low number of branches in HDPE pipe resins thanks to its high sensitivity, which is able to distinguish differences of up to 1 branch per 1,000 atoms of carbon.

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