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Product Portfolio
Browse our product portfolio to discover which Viscotek products can help with your macromolecular characterization.
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News USA:
Check out the latest USA News involving Viscotek.
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"The service provided by Viscotek representatives is unmatched by any other in the industry... A wonderful addition to the polymer community."
- E.F, Ph.D., Academic Institution
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Complete DSV Systems
For Dilute Solution Viscosity, Viscotek takes pride in being the only manufacturer capable of supplying you with a comprehensive system solution, regardless of your viscosity testing requirements. |
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News - Europe |
Malvern Instruments acquires Viscotek Corporation
Thursday, January 17, 2008
Malvern, UK: Materials characterization company Malvern Instruments has acquired Viscotek Corporation, a leading provider of chromatography solutions for the characterization of natural and synthetic polymers and proteins.
Malvern Instruments is a world-class supplier of systems for the characterization of particulate materials, providing complete application solutions across a broad range of industries. The acquisition of Viscotek brings new and complementary technologies and expertise into the company, adding Gel Permeation Chromatography (GPC), Flow Injection Polymer Analysis (FIPA) and Dilute Solution Viscosity (DSV), and extending the range of characterization solutions offered.
Paul Walker, Managing Director of Malvern Instruments said: “Viscotek has a long-established reputation for innovation and quality, and there is a close and complementary fit between the Viscotek product range and Malvern’s, for both protein and polymer applications. This acquisition will increase the characterization capabilities of Malvern’s existing nanometrology product lines.”
Viscotek Corporation, headquartered in Houston, Texas, was founded in 1984 by Dr. Max Haney, inventor of the four-capillary differential viscometer detector. “Since its inception, Viscotek has pioneered innovative technologies and products for gel permeation chromatography of natural and synthetic polymers and proteins, and determination of dilute solution viscosities,” he said. “In recent years Viscotek has experienced exciting growth. The powerful alignment of Viscotek’s products with the Malvern range will provide even more opportunity to comprehensively meet a broad range of customer needs. I am delighted that the company has become part of Malvern Instruments, where I am confident of further development and a thriving and expanded business.”
Expanding on the complementary nature of the two companies’ product ranges, Paul Walker went on to say: “In the biomolecular arena the addition of Viscotek systems alongside our existing product range will further inform physical biochemists of the structure-function relationship of proteins, important in determining disease mechanisms for example. In the field of industrial and pharmaceutical polymers, Malvern will now be able to offer complete characterization solutions, essential in the development of new functional polymers that meet the demands of increasingly complex drug delivery systems and stringent environmental requirements.
“Through Malvern’s global sales organization, customers worldwide will have access to the full range of solutions, all backed by the company’s extensive technical and applications support network.”
Viscotek’s present management team will continue to lead the business, which will operate as Viscotek Corporation, a Malvern Company.
For further information about the Malvern and Viscotek ranges please visit www.malvern.com and www.viscotek.com
Malvern and Malvern Instruments are registered trademarks of Malvern Instruments Ltd. Viscotek is a registered trademark of Viscotek Corp.
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Analysis of polymers only soluble at elevated temperatures
Wednesday, October 31, 2007
The Viscotek Model 350 High Temperature GPC (HT-GPC) System is a
revolutionary advanced detector system specifically designed for the
characterisation of polyolefins, and other synthetic polymers that are
soluble only at elevated temperatures.
The Model 350 HT-GPC system provides absolute molecular weight
without extrapolation or correction, molecular size (Rg and Rh to less
than 1 nm), and intrinsic viscosity, as well as information on
branching, structure and aggregation in a single GPC/SEC experiment.
The system may also be configured with an Infrared (IR) Detector for
short-chain branching analysis or a UV/VIS detector for copolymer
compositional analysis.
Representing a breakthrough in high temperature technology, the new
system includes a High Temperature Triple Detector Array (HT-TDA), an
Automated sample preparation & delivery system, a pulseless isocratic
Pump, Degasser and OmniSEC GPC software for complete system control,
data acquisition and processing. Engineered in a modular format for
flexibility and enhanced reliability, the Model 350 HT-GPC features a
detector module (HT-TDA) that is easily removed from the high
temperature environment for routine maintenance.
The Viscotek Model 350 HT-TDA combines low angle light scattering
with viscometry and concentration for complete and comprehensive
macromolecular characterisation. All detectors reside within a
temperature-controlled oven compartment (30 -175 degrees C) which has
space for four analytical GPC columns. The 350 HT-TDA also features an
in-line, self-cleaning filter and can be configured with only an RI,
an RI and viscometer, an RI and light scattering detector or as a full
Triple Detector Array.
Founded in 1985, Viscotek GPC / SEC detectors, software and systems
are in daily use in 1000's of leading research, quality control and
process development laboratories worldwide. Viscotek's innovative
products and technologies are backed throughout Europe, North America
and Asia by superior technical service and analytical support.
For further information on the Model 350 HT-GPC please contact
Viscotek on telephone +44-1344 467180 or email
info@viscotek-europe.com
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Triple Detection GPC - a powerful tool for characterising polysaccharides
Thursday, July 19, 2007
Viscotek has produced a series of new application notes demonstrating
how precise and comprehensive characterisation of different
polysaccharides can be achieved with its unique Triple Detection GPC
system.
Chitosans are a focus of interest for various applications. They can
be used in a range of medical applications as they are biocompatible,
hypoallergenic, biodegradable and bioabsorbable. Triple Detection
Application Note 7 examines how physical processing of chitosan
samples can directly affect characteristic properties, such as
molecular weight distribution, size and conformation. The application
note demonstrates how by using the Triple Detector approach, changes
in molecular structure and molecular chain length can be
simultaneously and independently monitored.
Many hydrocolloids such as agar, pectin, gelatine and carrageenan
find application as thickening, gelling and stabilising agents in
products such as frozen desserts, chocolate milk, yoghurt and
toothpaste. In the application note 'Structural Distribution of
Carrageenan Samples' - a Viscotek Triple Detection GPC system and
OmniSEC software is used to fully characterise three carrageenan
samples at elevated temperature to ensure complete dissolution. Data
is provided demonstrating how the tripe detection technique provides
valuable information on chain conformation as well as the structural
distribution of the Kappa, Iota and Lambda forms of this complex
naturally occurring polymer in a single experiment.
Maltodextrins are produced from the degradation of starch, often by
the use of enzymes. The products are widely used as ingredients in
food and pharmaceutical products. Because maltodextrins are derived
from starch they are a mixture of both linear and branched molecules.
This can lead to large errors if they are characterised by
conventional GPC. The application note 'Analysis of Maltodextrins'
shows how the use of Triple Detection GPC can clearly measure the
differences in both structure and molecular weight for 3 maltodextrins
with similar bulk viscosities but very different end-use properties.
Triple Detection sets the standard for GPC/SEC technology and is the
preferred method for even complex polysaccharides. The Viscotek
Triple Detector System (TDA™) employs a concentration detector,
viscometer and Low Angle Light Scattering (LALS) detector acting in
concert, with each detector providing complimentary but different
information. Using LALS to measure molecular weights is extremely
important when studying large biomolecules such as polysaccharides.
Other extrapolation based light scattering techniques, such as those
using multi angle detectors, cannot be used because the large molecule
sizes result in large data fitting errors. By comparison the Viscotek
LALS detector measures scattered light at 7 degrees, close enough to
zero that the measurement is direct with no need to extrapolate or
calculate to get accurate molecular weight and structure data.
The application notes demonstrate however that it is the combination
of the three detectors acting in concert that allows the Viscotek TDA
system to unlock molecular weight distribution, viscosity, molecular
size, conformation and branching frequency data from the
polysaccharide samples.
For copies of these application notes or further information on
Triple Detection GPC please contact Viscotek.
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Dual detector provides entry-level access to powerful Biomolecular characterisation
Thursday, June 21, 2007
The Model 270 Dual Detector from Viscotek (www.viscotek.com) has been
designed to simply add to any existing GPC/SEC system equipped with a
concentration detector, instantly converting it into a powerful triple
detector system.
The Model 270 Dual Detector is the perfect entry-level system for
laboratories looking to make detailed characterisation of biomolecules
including polysaccharides, DNA, antibodies, proteins and protein
conjugates.
The Model 270 Dual Detector features a proven four-capillary
differential viscometer and revolutionary Low Angle Light Scattering
(LALS) detector that operate at ambient temperature. The viscometer
measures intrinsic viscosity and can be used to determine molecular
size (Rh to less than 1nm) and density. The viscometer can also be
used to provide additional valuable information on structure,
conformation, aggregation and branching. Unlike multi-angle light
scattering techniques that can only determine molecular weight by
extrapolation, the Model 270 LALS detector measures molecular weight
directly and thus is inherently more accurate.
Founded in 1985, Viscotek GPC / SEC detectors, software and systems
are in daily use in 1000's of leading research, quality control and
process development laboratories worldwide. Viscotek's innovative
products and technologies are backed throughout Europe, North America
and Asia by superior technical service and analytical support.
For further information on the Model 270 Dual Detector please contact
Viscotek.
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GPC/SEC characterisation of copolymers and conjugated proteins
Tuesday, April 24, 2007
The Tetra Detector System from Viscotek (www.viscotek.com) provides a
unique tool for characterising complex molecules including copolymers
and conjugated proteins.
Combining the power of RI, UV, Viscometry and Low Angle Light
Scattering (LALS) detectors acting together, with each detector
providing complimentary but different information, the Tetra Detector
is the most powerful GPC/SEC system available today. When integrated
with the GPCmax (pump, autosampler, degasser) and OmniSEC software the
Tetra Detector system is able to cope with even the most demanding
analyses.
By ratioing the response from the two concentration detectors the
system corrects the limitations of using a single detector by
delivering rapid determination of a true copolymer or conjugated
protein concentration profile. Using the viscometry and LALS detectors
the Tetra Detector system enables users to obtain absolute molecular
weight, molecular size (to less than 1 nm) and intrinsic viscosity as
well as information on branching, conformation, aggregation and
composition from their sample. Maintained in a thermostatically
controlled environment the TDA has the sensitivity and stability to
repeatably characterise copolymers and conjugated proteins even at low
concentrations.
Founded in 1985, Viscotek GPC / SEC detectors, software and systems
are in daily use in 1000's of leading research, quality control and
process development laboratories worldwide. Over the years Viscotek
has built an online reference list of several hundred customer
technical articles covering applications of GPC/SEC technology,
peptide and protein analysis, flow injection polymer analysis and
dilute solution viscometry.
A pdf brochure describing the Tetra Detector system in more detail
can be downloaded from
http://www.viscotek.com/triple_detector_array_with_LALS_and_UV.php4
For further information please contact Viscotek on telephone +44-1344
467180 or email info@viscotek-europe.com
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Informative text on Dynamic Light Scattering instrumentation
Tuesday, March 27, 2007
A new 8-page technical brochure is available from Viscotek - that
describes its recently launched second generation Model 802 Dynamic
Light Scattering (DLS) instrument.
For those new to DLS the new brochure provides background to the
technique and applications of dynamic light scattering. Further well
illustrated text provides an in-depth review of the performance
advantages born out of Viscotek's exclusive single mode fibre
technology as well as introducing a range of exciting new technical
innovations pioneered in the new generation Model 802 DLS.
Designed for laboratories that need a complete understanding of how
their protein, biopolymer or nanoparticulate material behaves in
solution the new ergonomically designed Model 802 DLS sets a new
standard for superior sensitivity, resolution, accuracy and sampling
versatility compared to any other light scattering instrument
currently available.
Traditionally laboratories faced with analysing higher concentration
samples, such as emulsion or nanoparticles, have found traditional
light scattering instruments limited both in terms of sensitivity and
resolution. To address these deficiencies Viscotek developed as an
option for its new generation system - Dual Attenuation Technology.
Dual Attenuation Technology (DAT) is a unique technique that controls
the level of light entering the sample as well as controlling
scattered light going to the detector. In this way, for the first
time, researchers are able to work at the optimum conditions for the
laser and detector irrespective of sample type. In combination with
OmniSIZE 3.0 software the new generation Model 802 DLS with DAT is
able to automatically adjust the instrument to its optimum setting
sample by sample. From 100% transmission for the maximum sensitivity
right down to 0.0001% transmission for concentrated samples - a
dynamic range of 106.
Further innovations introduced on the new Model 802 DLS include a
544-channel correlator that provides, as standard, industry leading
resolution and distribution accuracy. In addition to operating up to
90°C the new instrument now incorporates digital sensors that provide
automatic environmental control as well as real-time humidity and dew
point information.
Founded in 1985, Viscotek is the global leader in Gel Permeation
Chromatography (GPC) / Size Exclusion Chromatography (SEC) detectors,
software and systems for the characterisation of natural and synthetic
polymers, copolymers, proteins, protein conjugates and nanoparticulate
materials. Viscotek's innovative products and technologies are backed
in Europe, North America and Asia by superior technical service and
analytical support.
For a copy of the new generation Model 802 DLS instrument brochure
please contact Viscotek on telephone +44-1344-467180 or email
info@viscotek-europe.com
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State-of-the-art DLS microplate instrument
Monday, February 26, 2007
Viscotek, market leader in multi-detector characterisation of
polymers, proteins and nanoparticulate materials, has announced the
launch at Pittcon 2007 this week of a new state-of-the-art DLS
microplate instrument - the HorizonDLS ™.
Incorporating Viscotek's patented Single Mode Fibre (SMF) optical
detection, unique Dual Attention Technology (DAT) and independent
temperature control of microplate and sample the new HorizonDLS™ sets
a new benchmark for automated biomolecular characterisation.
The HorizonDLS™ delivers the same unmatched sensitivity on ultra low
sample volumes as the acclaimed Model 802 DLS, but automatically, from
the entire plate or selected wells, with no user interaction
required. After manual or robotic placement of a prepared microplate
into the temperature controlled instrument - intuitive OmniSIZE™
software then automatically makes the measurements according to the
user programmed acquisition sequence and the results are displayed in
seconds. A complete size distribution of an entire microplate can be
automatically accomplished in just minutes
The HorizonDLS™ uniquely delivers both productivity and performance
to a broad range of applications including screening of aggregates
prior to protein crystallisation, monitoring size and aggregation as a
function of varying solution conditions, buffer optimisation and
characterisation and screening biotherapeutics for self-association.
All laboratories involved in biomolecular characterisation require a
complete understanding of how their proteins and other biomolecules
function in solution. Stability, conformation, aggregation and
complex formation are all important issues facing a wide variety of
research and development laboratories. The Viscotek HorizonDLS™ is an
essential tool that can provide this information in a fast, accurate
and user-friendly manner.
Founded in 1985, Viscotek is the global leader in GPC / SEC
detectors, software and systems for the characterisation of polymers,
proteins and nanoparticles. Launched in 2005 Viscotek's innovative
Model 802 DLS instrument has been widely acclaimed by laboratories
around the world particularly those specialising in biomolecular
discovery, development and delivery, protein-protein interactions,
protein conformation analysis and measurement of the stability and
size of lipids and conjugates.
For more information on the HorizonDLS™, please visit booth 3838 at
Pittcon 2007 or alternatively contact Viscotek by email on
info@viscotek-europe.com (Europe) or info@viscotek.com (North America
/ ROW).
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New product bonanza for polymer & protein scientists
Wednesday, January 31, 2007
New product bonanza for polymer & protein scientists ..
Viscotek, leaders in multi-detector characterisation of proteins,
polymers and nanoparticulate materials, has announced a series of new
product introductions will be made at Pittcon 2007 in Chicago, IL
(USA).
At this important meeting - Viscotek will launch its new High
Throughput Dynamic Light Scattering (HTDLS) instrument. Combining the
proven benefits of Viscotek's patented single mode fibre (SMF)
technology and an entirely new 3-axis, automated platform - the HTDLS
is a truly high throughput, dynamic light scattering system unhindered
by compromise. The HTDLS delivers the highest sensitivity, wide range
temperature control and low sample volume allowing you to make the
most of your assays, whatever plate types you choose to use.
Achieving market-leading performance, the HTDLS cuts down measurement
times to c. 1 minute per sample well.
Traditionally laboratories faced with analysing higher concentration
samples, such as emulsion or nanoparticles, have found traditional
light scattering instruments limited both in terms of sensitivity and
resolution. To address these deficiencies Viscotek has launched the
Model 802- DAT. Dual Attenuation Technology (DAT) is a unique
technique that controls the level of light entering the sample as well
as controlling scattered light going to the detector. In this way,
for the first time, researchers are able to work at the optimum
conditions for the laser and detector irrespective of sample type. In
combination with OmniSIZE 3.0 software the new generation Model 802
DLS with DAT is able to automatically adjust the instrument to its
optimum setting sample by sample. From 100% transmission for the
maximum sensitivity right down to 0.0001% transmission for
concentrated samples - a dynamic range of 10 6.
Visitors to Booth 3838 will also have the chance see and discuss the
latest versions of the company's market leading multi-detector GPC/SEC
systems - the Triple Detector Array (TDA) and the GPCmax. Viscotek
triple detection systems, which employ a concentration detector,
viscometer and light scattering detector operating in concert, are
today the defacto standard for the characterisation of natural and
synthetic polymers and proteins in the petrochemical, specialty
chemical, elastomers, adhesives, coatings, food, agricultural,
academic, pharmaceutical and biotechnology markets.
For scientists looking to characterise and quantitate polymers in the
production environment Viscotek will be showing its popular FIPA
system and the latest version of its Model 501 Dilute Solution
Viscometer (DSV). To automate acquisition and processing of data
Viscotek has consulted with industry users to produce new Automated
Relative Viscometry software. Based upon Viscotek's patented Y501
viscometer design the Y501 ARV system measures solvent and sample
viscosity simultaneously, avoiding errors due to temperature
fluctuations and solvent variations. The system provides faster
analysis, greater precision and less solvent exposure when compared to
the traditional Ubbelohde or Cannon-Fenske glass tube viscometers that
it replaces.
Founded in 1985, Viscotek's innovative products and technologies are
backed in Europe, North America and Asia by superior technical service
and analytical support.
For more information on Viscotek's product innovations and services,
please visit booth 2138 at Pittcon 2007 or alternatively, please visit
www.viscotek.com or e-mail info@viscotek-europe.com (Europe) /
info@viscotek.com (North America).
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