Chromatography 5 Introducing the Source for High Quality Chromatography Glassware
Researchers have a source for high quality, chromatography glassware designed to provide convenience, economy and efficiency. Kimble Chase offers a portfolio of chromatography glassware that includes columns, tanks, sample vials and its unique solvent handling system, with Ultra-Ware® applications, chromatographers use borosilicate glass CHROMAFLEX®
and FLEX-COLUMN® , or polypropylene DISPOSAFLEX®
reservoirs. For preparative scale-up chromatography columns. Columns are
supported with available fittings, flow adaptors and packing reservoirs. For analytical separations, Kimble Chase manufactures glass gravity columns in several configurations along with reservoirs and adaptors. For custom chromatography columns, the Custom Glass Shop at Kimble Chase offers design and fabrication services.
Kimble Chase offers optically clear, ruggedly durable TLC Developing Tanks in several configurations, including rectangular and cylindrical. Microcaps are ingenious borosilicate glass capillary tubes designed for precise TLC plate spotting. Other accessories include TLC reagent sprayers, a plate streaker and labelling templates. Kimble Chase offers Ultra-Ware HPLC Mobile Phase Handling Systems to improve retention-time reproducibility and baseline stability by reducing contaminant background noise levels. These airtight and chemically resistant systems eliminate exposure to ambient air contaminants while maximising the effectiveness of helium sparging. The plastic safety coating used on Ultra-Ware reservoirs minimises photochemical degradation of the mobile phase by blocking virtually all ultraviolet radiation below 385 nanometers. The systems provide completely integrated filtration, sparging/degassing and delivery of solvents. Reservoirs, with their patented conical bottoms, are available in sizes ranging from 250mL to 20 litres.
For chromatography sample management, Kimble Chase offers chromatography and sample storage vials in various styles, with attached closures, printed volume measurement lines, and closures with multiple cap and liner combinations in a choice of materials. Kimble Chaseʼs vials are manufactured in USA-based, ISO-9001 compliant facilities.
Circle no. 13
Pushing the Boundaries of GPC
The Viscotek multi-detector gel permeation chromatography (GPC) system from Malvern Instruments is proving to be the ideal solution for researchers at The University of Texas at Austin whose work is taking them to the very limits of what can be achieved by GPC. The research team from the Department of Chemistry and Biochemistry is using multiple Viscotek GPC instruments to help guide the development of new monomers and polymers for use in high performance solar cells.
“We prepare many novel polymers and need the most powerful GPC technology available in order to fully characterise our materials,” said Professor Christopher Bielawski. “The multiple detectors of the Viscotek system provide us with critical compositional, structural, and molecular weight information, particularly for some of our more challenging materials. Equally important, however, is the support we’ve received from Malvern. Their GPC experts have helped us to find new and innovative ways to push the boundaries of the technique to new limits which have been beneficial for our studies.”
Professor Bielawski’s group synthesises new monomers, which are combined using a polymerisation reaction to form new polymers that feature novel structures and useful properties. They frequently target very high molecular weight materials, which are often only sparingly soluble in the solvents typically used for GPC analysis. Here, Malvern has provided support by exploring the application of relatively exotic eluents to help the group establish new procedures to successfully acquire the information required.
The Viscotek TDA Max is a complete, advanced, multi-detector GPC/size exclusion chromatography systems suitable for all macromolecules. It is configurable with a comprehensive range of detectors: refractive index; viscometry; light scattering (dynamic or static); and UV (single wavelength or PDA). Powerful OmniSEC software simplifies control of the whole system, combining the information from each detector to provide advanced characterisation parameters.
Circle no. 14 Circle no. 15
INTERNATIONAL LABMATE - JANUARY/FEBRUARY 2012
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