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"I have purchased 7 GPC systems from Viscotek in Europe, US and Canada. I am very satisfied. The systems are robust and affordable. OmniSEC software is very user friendly and highly versatile."
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Complete DSV Systems
For Dilute Solution Viscosity, Viscotek takes pride in being the only manufacturer capable of supplying you with a comprehensive system solution, regardless of your viscosity testing requirements.
RI Detector
Refractive Index Detector
RI Detector The Viscotek Model 3580 Differential Refractive Index (RI) Detector sets the standard in GPC for the determination of sample concentration. It combines superior sensitivity and versatility with reliability, ease-of-use and excellent linearity over a wide range of concentrations.

The RI is regarded as the universal detector in Gel Permeation/Size Exclusion Chromatography (GPC/SEC). It is typically employed in conventional calibration with a set of standards to provide relative molecular weight and polydispersity. However, when combined with advanced detectors such as viscometers and light scattering detectors, the concentration and dn/dc provided by the RI can be used to determine intrinsic viscosity and absolute molecular weight.

The Model 3580 DifRI Rightferential Refractive Index Detector mates seamlessly with the Viscotek GPCmax™ Pump/Autosampler/Degasser Module and OmniSEC™ software to form a complete Conventional GPC System. It can also be coupled with the Model 3210 UV/VIS for copolymer compositional analysis, or the Viscotek Model 270 Viscometer/Light Scattering Dual Detector to create a modular Triple or Tetra Detector GPC System.

For more information, including full technical specifications, performance information and product details, please click below to download our product brochure.

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Complete Gel Permeation Chromatography (GPC) / Size Exclusion Chromatography (SEC) systems for the characterization of natural and synthetic polymers, proteins, conjugates and excipients. Integrated Triple and Tetra Detector Arrays (TDAs) featuring Low Angle Light Scattering (LALS) detectors, four capillary differential viscometer detectors, refractometers and UV/VIS detectors; in a single experiment, obtain absolute molecular weight, molecular size, intrinsic viscosity, conformation, branching, aggregation and copolymer composition. Flow Injection Polymer Analysis (FIPA) for fast, accurate and precise average molecular weight, size and intrinsic viscosity in routine QA/QC and process control. Automated Dilute Solution Viscosity (DSV) systems provide relative, inherent, and intrinsic viscosity.