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Malvern
has added the SV-10 Vibro viscometer to its range
of material characterization instruments for use with
its Zetasizer Nano particle characterization systems.
The SV-10 is exceptionally easy to use and clean,
is relatively low cost and gives rapid, highly accurate
viscosity measurements in the range 0.3 to 10,000
mPa.s. With 1% accuracy across the whole measurement
range, the data it generates can be used to enhance
the accuracy of particle size measurements by dynamic
light scattering. Used together, the SV-10 and the
Zetasizer Nano provide an excellent option for the
study of emulsions and dispersions, and more particularly
for the characterization of proteins in solution prior
to crystallization.
The
technique of dynamic light scattering determines particle
size by observing the random movement of particles
undergoing Brownian motion. As this behaviour is directly
related to the viscosity of the fluid in which the
particles are moving, inaccuracies in the measurement
of viscosity translate directly into inaccuracies
in particle size measurement. The very high accuracy
of the SV-10, even at the low viscosities typical
of aqueous media, therefore makes it an invaluable
accessory for dynamic light scattering systems.
The
SV-10 determines viscosity by measuring the current
required by an electromagnetic drive to vibrate two
gold paddles immersed in the sample at constant amplitude.
The damping effect on the vibration due to the sample
is related to its viscosity. The system takes around
15 seconds to stabilize, after which a continuous
reading of viscosity is produced. The use of gold
plated sensors makes the unit compatible with all
fluids and it is suitable for measurements in the
temperature range 0 to 100oC.
Further
details at www.malvern.co.uk/viscometer
Contact:
Trish Appleton
Kapler Communications
Suite 2, Cressner House
12 Huntingdon Street, St Neots
Cambridgeshire UK
PE19 1BD
Tel: +44 (0) 1480 471117
Fax: +44 (0) 1480 471118
trish@kapleronline.com
USA
contact:
Marisa Fraser
Malvern Instruments Inc
10 Southville Road
Southborough, MA 01772, USA
Tel: +1 508 480 0200
Fax: +1 508 460 9692
marisa.fraser@malvernusa.com
Please
send sales enquiries to:
Alison Vines
Malvern Instruments Ltd
Enigma Business Park, Grovewood Road
Malvern, Worcestershire UK
WR14 1XZ
Tel: +44(0) 1684 892456
Fax: +44 (0) 1684 892789
salesinfo@malvern.co.uk
Copyright
© Malvern
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