Viscotek TDA 3050 pages

نسخه متنی

BROCHURE

VISCOTEK TRIPLE/TETRA

DETECTOR ARRAY (TDA)

The Viscotek TDA is a fully integrated detector containing refractive index, light

scattering and intrinsic viscosity detectors.

The refractive index detector is a deflective-type differential refractive index detector for

measuring the concentration of a dissolved sample in solution. The unique design

provides high sensitivity and the robust cell can handle higher backpressures than other

Rl detectors. This allows the Rl detector to be placed in series with the other detectors

for maximum sensitivity.

llJI

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.

The TDA also has space for a flow cell for a UV-PDA. The cell connects to the external

detector via fiber optic cables.

All of the detectors and the UV cell are housed with the columns in an oven for

maximum temperature and detector stability.

MOLECULAR WEIGHT

MOLECULAR SIZE

MOLECULAR STRUCTURE

Malvern

Malvern Instruments Worldwide

Sales and services centres in over 65 countries

www.malvern.com/contact

درباره سازنده