Malvern unveils ground-breaking new GPC/SEC system

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  • Published: Jan 29, 2015
  • Author: Jon Evans
  • Suppliers: Malvern Instruments
  • Channels: HPLC / Detectors
thumbnail image: Malvern unveils ground-breaking new GPC/SEC system

Malvern Instruments has launched a completely new gel permeation/size exclusion chromatography (GPC/SEC) system, which it claims breaks new ground in terms of high performance, ease of use and productivity.

Malvern’s innovative OMNISEC system integrates highly efficient sample separation via the OMNISEC RESOLVE module and high-sensitivity analysis using OMNISEC REVEAL, a fully integrated multi-detector array. The system is designed for conducting detailed analyses and studies of natural or synthetic polymers, proteins and macromolecules.

OMNISEC RESOLVE consists of a sample degasser, pump, autosampler and column oven, each optimized for precise, high-resolution separations. This translates into smooth stable baselines for detector analysis, which in turn boost the accuracy of all measurements. Key features include a low volume, high efficiency degasser design that permits rapid switchover from one sample type to another, thereby delivering substantial time saving in busy multi-user labs. The new temperature controlled autosampler eliminates injection waste, minimizing the sample required for routine measurement, and in combination with the column oven maintains all samples under closely controlled conditions throughout the analysis. This is especially important when dealing with materials such as proteins that can be temperature sensitive.

OMNISEC REVEAL comprises four different detectors: refractive index (RI), UV/Vis Photodiode array (UV-PDA), low angle/right angle light scattering (RALS/LALS) and viscometer. The light scattering detector is the most sensitive on the market, accurately able to measure molecular weights as low as 200Da or injection masses of 100ng. A new self-balancing viscometer design with a user exchangeable capillary bridge boosts instrument productivity and cuts lifetime costs by extending viscometer life, reducing instrument downtime and minimizing maintenance requirements. Excellent temperature control across the complete module, including the integrated detectors and inter-detector tubing, further boosts the accuracy of all measurements.

As well as the complete OMNISEC system, OMNISEC REVEAL can be purchased as an individual detector module to add to an existing GPC/SEC system. However, the integrated system enjoys substantial benefits, including smaller inter-detector volumes, reduced band broadening and better temperature control. These benefits deliver improved sample stability and enhanced accuracy, as well as the day-to-day productivity efficiencies that stem from using a system that has been fully and optimally integrated to meet modern GPC/SEC requirements.

(Photo of OMNISEC system courtesy of Malvern Instruments.)

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