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"I have purchased 7 GPC systems from Viscotek in Europe, US and Canada. I am very satisfied. The systems are robust and affordable. OmniSEC software is very user friendly and highly versatile."
- R.N., Academic Institution
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Nanoparticle and Protein Sizing
Viscotek is proud to introduce its range of Dynamic Light Scattering Detectors featuring rapid, accurate and sensitive sizing for proteins, biomolecules, nanoparticles & polymers and a pair of outstanding technologies unique to Viscotek.
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News USA:
Check out the latest USA News involving Viscotek.
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Application Notes
Our database of GPC/SEC application notes explain the use of concentration, viscometer and light scattering detectors to obtain a distribution of absolute molecular weight, size and intrinsic viscosity, as well as information on conformation, aggregation, branching and copolymer composition. |
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News - USA |
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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Integrated Tetra Detector GPC/SEC System
Saturday, December 01, 2007
Introducing the Viscotek Tetra Detector System representing the most comprehensive and powerful GPC/SEC system available on the market today. It features an integrated Tetra Detector Array comprised of a revolutionary Low Angle Light Scattering (LALS) detector, four capillary viscometer detector, RI and UV/VIS; a GPCmax Pump, Autosampler and Degasser Module specifically designed for GPC/SEC applications and OmniSEC software for multiple detection analysis and complete system control. In a single GPC/SEC experiment, obtain Absolute Molecular Weight, Molecular Size (to less then 1 nm), and Intrinsic Viscosity, as well as information on Branching, Conformation, Aggregation and Copolymer Composition.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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Triple Detector Array (TDA) with LALS and UV-VIS
Thursday, November 01, 2007
The Triple Detector Array (TDA™) sets the standard for GPC/SEC technology and is the preferred method for characterizing natural and synthetic polymers and proteins. The TDA employs a concentration detector, viscometer and light scattering detector acting in concert, with each detector providing complimentary but different information.
The new TDA combines the power of traditional triple detection with all new UV-VIS and Low Angle Light Scattering (LALS) options. Measure concentration with an RI, UV or both. When used simultaneously, the RI and UV provide information necessary for the determination of copolymer composition.
LALS, a breakthrough in light scattering technology, is the only GPC detection method that provides absolute molecular weights without extrapolation or correction. Operating at an angle of 7° (degrees), LALS directly measures molecular weight for an extensive range of natural and synthetic polymers and proteins.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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GPCmax
Monday, October 01, 2007
Introducing the world's first integrated pump, autosampler and degasser module specifically designed for GPC/SEC applications. It mates seamlessly with Viscotek's Triple Detector Array, Dual Detector or any concentration detector to form a complete GPC/SEC system.
The GPCmax features a fixed loop autosampler capable of handling 2ml or 20ml vials (eliminating the need for sample transfer) and an isocratic pump for constant and pulseless solvent flow. The pump and autosampler can be programmed manually using the front instrument panel or through Viscotek’s OmniSEC software. It comes equipped with an in-line solvent degasser to remove dissolved gases and allow optimum performance of concentration, viscosity and light scattering detectors.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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Molecular Weight in Three Minutes
Saturday, September 01, 2007
Viscotek’s Flow Injection Polymer Analysis (FIPA) technique delivers fast and accurate average molecular weight and intrinsic viscosity in 3–5 minutes — without the need for elaborate sample preparation. FIPA provides the perfect complement to your current testing methods. Short sample turn-around time means it can be used for high throughput screening as well as routine process and quality control.
The control of the polymerization process requires fast turnaround time for sequential measurements of the extent of reaction. FIPA measures polymer concentrations, molecular weight and intrinsic viscosity of a solution or emulsion reactor sample in less than five minutes. The typical system consists of a pump, an injector, a FIPA column and the Viscotek Triple Detector Array (TDA). The TDA combines a light scattering detector, viscometer detector and refractometer in a single integrated unit with fixed inter-detector volumes and temperature control.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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Autosampler
Wednesday, August 01, 2007
The Vortex™ autosampler from Viscotek consists of an integrated autosampling device and multi-stirrer and is designed to increase efficiency, enhance precision and promote operator safety. The temperature controlled, heated (up to 150 C) multi-stirrer assembly features a stainless steel tray, capable of handling both 20 ml and 40 ml vials. Each vial position has its own magnetic stirring mechanism, delivering consistent and reproducible stirring action from vial-to-vial and eliminating variability due to the dissolution process. When coupled with Viscotek’s Triple Detector Array (TDA™) or Relative Viscometer, the Vortex provides a complete, automated system for macromolecular characterization and determination of solution viscosities.
A new addition to Viscotek's comprehensive range of GPC/SEC solutions, the Vortex will allow chemists to concentrate on testing and data analysis, rather than time consuming and tedious sample preparation.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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OmniSEC v. 4.1 GPC/SEC Software
Sunday, July 01, 2007
Viscotek ‘s OmniSEC 4.1 GPC/SEC integrated software package for multiple detection analysis helps maximize the information and efficiency of size separation experiments. Version 4.1 has the ability to calculate molecular weight of a protein sample without knowing dn/dc or concentration as well as Flow Injection Polymer Analysis style calculations. Other excellent features include variable dn/dc and the powerful report designer. It is 21CFR part 11 compliant and increases the information available from GPC/SEC experiments through enhancements to calibration calculations, copolymer analysis, overlays, multiple peak detection and data acquisition. Users have the flexibility of fixed baseline or different baseline and limit settings for each channel, and several new options are available for constructing the baseline. The enhanced A2 calculation makes OmniSEC™ powerful, versatile and user-friendly.
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Automated Relative Viscometer System
Friday, June 01, 2007
Introducing the new Automated Relative Viscometer (ARV) System for the determination of Relative, Intrinsic, Inherent, Specific and Absolute Viscosity as well as Molecular Weight. The automated RV System features the Viscotek Relative Viscometer, a patented, dual-capillary viscometer specifically designed to measure the viscosities of dilute polymer solutions. The Relative Viscometer provides faster analysis, greater accuracy, better precision and less solvent exposure when compared to conventional glass tubes.
In addition to the RV, the System consists of the Vortex Integrated Autosampler/ Autopreparation Module for fully automated sample preparation and sample delivery. And ETA Software for data acquisition, processing, reporting and complete system control.
The RV System delivers a fast, precise and accurate determination of solution viscosity. The significant level of automation allows the operator to concentrate on testing, rather than tedious sample preparation, thus increasing efficiency, enhancing precision and promoting operator safety.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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New Generation of High-Temp GPC
Tuesday, May 01, 2007
The new Viscotek Model 350 HTGPC is a revolutionary high temperature (175°C) GPC system that represents a breakthrough in characterization technology. Designed in a modular component format, the Model 350 HTGPC features automated sample preparation and delivery, self-cleaning in-line sample filtration and a detector module that is easily removed from the high temperature environment for routine maintenance. The 350 HTGPC can be configured with a Refractive Index (RI) detector and Low angle/Right Angle Laser Light Scattering (LALS/RALS) detector to provide absolute molecular weight, molecular size and other information critical to your application.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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Integrated Triple Detector GPC/SEC System
Thursday, March 01, 2007
Introducing the Integrated GPC/SEC Systems from Viscotek Corporation. Users of this system get a competitive advantage in macromolecular characterization from the only vendor capable of offering a comprehensive, advanced detector system for the characterization of natural and synthetic polymers, copolymers, proteins, pegylated proteins, protein conjugates, aggregates and excipients.
Viscotek’s Triple Detector System represents the most comprehensive and powerful GPC/SEC system available on the market today. It features an integrated Triple Detector Array (TDA) comprised of a revolutionary Low Angle Light Scattering (LALS) detector, four capillary viscometer detector, RI; a GPCmax Pump, Autosampler and Degasser Module specifically designed for GPC/SEC applications and OmniSEC software for multiple detection analysis and complete system control. In a single GPC/SEC experiment, this system can provide absolute molecular weight without the column calibration, extrapolations or corrections required by other techniques, molecular size (to less than 1 nm), and intrinsic viscosity, as well as information on structure, conformation, branching, aggregation and copolymer composition.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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270max GPC/SEC System
Thursday, March 01, 2007
Viscotek’s Model 270max is a modular advanced detector Gel Permeation / Size Exclusion Chromatography system that operates at ambient temperature. It is specifically designed for the characterization of natural and synthetic polymers, copolymers, proteins, nanoparticles and other macromolecules. The 270max will provide absolute molecular weight without extrapolation or correction, molecular size (Rh to less than 1 nm and Rg), and intrinsic viscosity plus information on structure, conformation, aggregation and branching in a single GPC/SEC experiment. Ph: 800-375-5966 or 281-445-5966; www.viscotek.com
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RImax Conventional GPC/SEC System
Thursday, February 01, 2007
Conventional Calibration is the most widely practiced form of GPC because of its simplicity. It employs a concentration detector, typically a Refractive Index (RI) Detector or UV/VIS, and a calibrated GPC/SEC column to obtain the relative molecular weight, size and polydispersity of natural or synthetic polymers, copolymers and proteins.
Viscotek announces their new RImax Conventional GPC/SEC System featuring an RI Detector used for measuring concentration, or a UV/VIS for measuring the concentration of polymeric samples or proteins having a UV chromaphore, or both an RI and UV for copolymer analysis. It also include a GPCmax Integrated Pump, Autosampler and Degasser Module specifically designed for GPC/SEC applications, and OmniSEC CFR 21 part 11 compliant software for complete system control, data acquisition, analysis and reporting.
Though simple and easy to use, the information content in conventional analysis is limited and the molecular weight obtained is always relative to the standards which have been used to calibrate the column. To obtain an absolute molecular weight, size and intrinsic viscosity, as well as information on structure, conformation, aggregation and branching, advanced detectors such as Viscotek’s light scattering and viscometer detectors can be added to a RImax Conventional System to create a Triple or Tetra Detector system.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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Tetra Detector Array with UV-LS-RI-VISC
Monday, January 01, 2007
The Tetra Detector Array represents the ultimate in GPC/SEC multiple detection technology for the characterization of natural and synthetic polymers, biopolymers and proteins. It consists of a patent-pending, revolutionary Low Angle Light Scattering (LALS) detector, four capillary viscometer detector, patent-pending refractometer and selectable wavelength UV/VIS. All the detectors, as well as the GPC columns, are contained within a heated oven compartment with temperature control to 80 degrees C, which means your sample never sees a variation in temperature. The integration and unique, proprietary arrangement of detectors (UV-LS-RI-VISC) insures minimal inter-detector volumes and reduced band-broadening, as well as eliminating the dilution effect and viscometer breakthrough experienced when the RI is placed last in the series.
In a single GPC/SEC experiment, obtain absolute molecular weight, molecular size (to less than 1 nm), and intrinsic viscosity, as well as information on branching, conformation, aggregation and copolymer composition.
For more information contact us at 1-800-375-5966 or visit us at www.viscotek.com
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