Triple Detector Array -Triple detection theory

The Viscotek Model 302-040 Triple Detector Array sets the standard for GPC/SEC technology and is the preferred method for characterizing natural and synthetic polymers, copolymers, proteins, excipients and other macromolecules.

The Model 302-040 Triple Detector Array consists of a Differential Refractive Index (RI) Detector, four-capillary Differential Viscometer and a Low Angle Light Scattering (LALS) Detector. All the detectors reside within a temperature-controlled compartment which also has space for 3-5 analytical GPC columns. This arrangement minimizes inter-detector volumes to reduce band-broadening effects and insures that detectors, inter-detector tubing, columns and sample reside at the same temperature throughout the course of the analysis.

In a single GPC/SEC experiment, the Triple Detector Array will provide:

Absolute molecular weight without the assumptions, extrapolations or corrections required by alternative techniques.
Molecular size expressed as Hydrodynamic Radius (Rh) to less than 1 nm and Radius of Gyration (Rg).
Intrinsic viscosity or molecular density.
Information on structure, conformation, aggregation and branching.

The detectors in the Triple Detector Array are arranged in a unique series configuration as follows: light scattering - differential refractometer – differential viscometer. This configuration, with the viscometer placed after the RI, eliminates the viscometer dilution effect and break-through, hence increasing sample throughput capability and efficiency of operation.

For more details and price, please contact MD Scientific at info@md-scientific.dk or +45 7027 8565.