Viscotek 270 Detector0 pages
BROCHURE
VISCOTEK 270 DUAL DETECTOR
MOLECULAR WEIGHT
MOLECULAR SIZE
MOLECULAR STRUCTURE
The 270 Dual Detector is a modular GPC/SEC detector containing both light scattering
and intrinsic viscosity detectors for upgrading a single-detector conventional GPC/SEC
system to a system capable of triple detection.
The light scattering detector contains a right-angle light scattering (RALS) detector for
the measurement of molecular weight of isotropic scatterers (<1 5nm radius) with
maximum sensitivity. It also contains a low angle light scattering (LALS) detector for
measuring the absolute molecular weight of anisotropic scatterers. The LALS detector is
the only true LALS detector available and measures at a lower angle than any other light
scattering system. By combining RALS and LALS data, the light scattering detector can
also calculate the radius of gyration.
The intrinsic viscometer is a 4-capillary wheatstone-bridge design for measuring the
intrinsic viscosity of molecules in solution. Combining molecular weight and intrinsic
viscosity data together allows Mark-Houwink parameters on molecular structure and
hydrodynamic radius to be calculated.
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