The instrument takes care of the filling of the vials, sample dissolution, in-line filtering and injection process. There is no need at all of vials transfer at high temperature. The GPC-IR main body consists of a Columns Oven compartment, with a 0.01ºC control up to 220ºC, where the GPC columns are placed and isolated from the rest of the hardware; and on top of it, the separate Injector-Detectors Oven compartment, where Injection and Filtration Valves and detectors are installed.
The autosampler’s capability is 70 samples, with a heated zone for sample dissolution. Each sample vial stays at the heated compartment (up to 250ºC) only for its selected dissolution time. This capability combined with a gentle shaking avoids the thermal and shear degradation in the samples. The instrument can be configured as a quadruple detector system with: Infrared detector IR4 (with concentration and composition sensors), Viscometer, Light Scattering (DAWN® HELEOS™ II of Wyatt Technology) and, optionally the high sensitivity IR5 with a Mercury Cadmium Telluride infrared detector can be added for the analysis of very low levels of branching (e.g. analysis of HDPE Pipe resins).
GPC-IR Virtual Instrumentation Software provides instrument control and process monitoring. The new and comprehensive GPC One calculation and reporting software platform integrates all detector signals in a single package. Also SQC (Statistical Quality Control) tools are incorporated into the software, to help tracking the status of the instrument.