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Home > Press > Malvern Instruments launches Viscosizer 200 - a new analytical instrument for biopharmaceutical development: Automated viscosity and molecular sizing using less than 10 µL sample

The new Viscosizer 200 from Malvern Instruments
The new Viscosizer 200 from Malvern Instruments

Abstract:
he new Viscosizer 200 from Malvern Instruments is the latest product to reach commercialization as a result of Malvern's highly focused Bioscience Development Initiative. Designed primarily to help solve key analytical challenges at the preformulation stage of pharmaceutical, and particularly biopharmaceutical, development, the automated Viscosizer 200 delivers viscosity and molecular size data on UV-active samples, using volumes of less than 10 µL.

Malvern Instruments launches Viscosizer 200 - a new analytical instrument for biopharmaceutical development: Automated viscosity and molecular sizing using less than 10 µL sample

Malvern, UK | Posted on July 31st, 2013

Measuring viscosity early in the development of biological formulations is critical in order to reduce the number of candidate failures during subsequent stages of development. The Viscosizer 200 has been engineered to meet early development screening requirements which demand automated measurement on extremely low sample volumes, which should ideally be recoverable, as well as operation at high sample concentrations under formulation conditions.

The temperature-controlled Viscosizer 200 measures viscosity from 0.9 cP to 120 cP and hydrodynamic radius from 0.2 nm to 100 nm, in samples at concentrations from 0.1 mg/mL to >300 mg/mL. Its integrated carousel autosampler can be configured with a maximum of 45 vial positions.

The technology at the heart of the Viscosizer 200 is UV area imaging. This is used to monitor the time-dependent absorbance profile of UV-active samples such as proteins, peptides and other chromophore-containing molecules as they migrate through a microcapillary.

Capillary viscometry has long been used to determine viscosity from a simple measurement of time from injection to detector, but is subject to injection time errors that can result in significant errors in subsequent calculations. The Viscosizer 200 has a dual-pass capillary design whereby sample is detected at two windows along the capillary. This enables precise measurement of the transit time between windows and therefore of the sample's viscosity relative to a reference, with demonstrable improvements over single-pass capillary systems.

For sizing analyses, as the sample migrates through the capillary, diffusion leads to broadening of the sample plug, a phenomenon countered by transverse diffusion: the smaller the molecule, the more rapid transverse diffusion and the less broadening of the peak. The Viscosizer 200 calculates mass-weighted mean hydrodynamic radius from the standard deviation of the sample profile at the two windows. UV wavelength selectivity means that the Viscosizer 200 can accurately measure the size of molecules of interest even within an excipient-laden formulation.

The Viscosizer 200 delivers to the demanding requirements of early biopharmaceutical development. It provides a unique analytical tool to support rapid understanding of the behavior of candidate molecules in various formulations, enabling important decisions on suitable formulations to be made as early as possible. The Viscosizer 200 also offers reliable size measurements for a variety of challenging applications in related fields.

For further details please visit www.malvern.com/viscosizer200

Malvern, Malvern Instruments and Viscosizer are registered trademarks of Malvern Instruments Ltd

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About Malvern Instruments
Malvern provides the materials and biophysical characterization technology and expertise that enables scientists and engineers to understand and control the properties of dispersed systems. These systems range from proteins and polymers in solution, particle and nanoparticle suspensions and emulsions, through to sprays and aerosols, industrial bulk powders and high concentration slurries. Used at all stages of research, development and manufacturing, Malvern’s materials characterization instruments provide critical information that helps accelerate research and product development, enhance and maintain product quality and optimize process efficiency.

Our products reflect Malvern’s drive to exploit the latest technological innovations and our commitment to maximizing the potential of established techniques. They are used by both industry and academia, in sectors ranging from pharmaceuticals and biopharmaceuticals to bulk chemicals, cement, plastics and polymers, energy and the environment.

Malvern systems are used to measure particle size, particle shape, zeta potential, protein charge, molecular weight, mass, size and conformation, rheological properties and for chemical identification, advancing the understanding of dispersed systems across many different industries and applications.

Headquartered in Malvern, UK, Malvern Instruments has subsidiary organizations in all major European markets, North America, China, Japan and Korea, a joint venture in India, a global distributor network and applications laboratories around the world. www.malvern.com

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Contacts:
For press information, please contact:

Trish Appleton
Kapler Communications
Phoenix House, Phoenix Park
Eaton Socon, Cambridgeshire, PE19 8EP, UK
Tel: +44 (0)1480 471059
Fax: +44 (0)1480 471069


USA contact:

Marisa Fraser
Malvern Instruments Inc.
117 Flanders Road
Westborough, MA 01581-1042 USA
Tel: +1 508 768 6400
Fax: +1 508 768 6403


Please send sales enquiries to:

Alison Vines
Malvern Instruments Ltd
Enigma Business Park, Grovewood Road
Malvern, Worcestershire WR14 1XZ UK
Tel: +44 (0) 1684 892456
Fax: +44 (0) 1684 892789

Copyright © Malvern Instruments

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