Tetra Detector Array

The Tetra Detector Array is ideal for the characterization of natural and synthetic polymers, biopolymers and proteins. It consists of a patent-pending Low-Angle Light-Scattering (LALS) detector, four capillary viscometer detectors, patent-pending refractometer and selectable wavelength UV/VIS. All the detectors, as well as the GPC columns, are contained within a heated oven compartment with temperature control to 80°C, which means the sample is not exposed to variations in temperature. The integration and unique, proprietary arrangement of detectors (UV-LS-RI-VISC) insures minimal inter-detector volumes and reduced band-broadening, as well as eliminates the dilution effect and viscometer breakthrough experienced when the RI is placed last in the series. In a single GPC/SEC experiment, absolute molecular weight, molecular size (to less than 1 nm), and intrinsic viscosity, as well as information on branching, conformation, aggregation and copolymer composition can be obtained.