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Supelco(R) Introduces Ascentis(R) Express HILIC HPLC Columns for High-Speed and High-Efficiency Separations
Date:3/11/2008

ST. LOUIS, March 11 /PRNewswire-FirstCall/ -- Supelco, a division of Sigma-Aldrich (Nasdaq: SIAL), has expanded the Ascentis Express product line, a family of innovative high-purity liquid chromatography (HPLC) columns designed to provide the analysis speed and resolving power of sub-2-micron columns with a 50% reduction in backpressure. Ascentis Express HILIC can perform high-speed and high-resolution analyses on highly polar compounds.

"The retention of highly polar compounds such as metabolites has always been a challenge to reversed-phase HPLC. HILIC provides researchers with the ability to increase retention and selectivity for these important compounds. Ascentis Express HILIC enables high speed and high resolution in the analysis of highly polar compounds," said Wayne K. Way, Marketing Manager at Supelco in Bellefonte, PA. "Ascentis Express HILIC is useful in two-dimensional HPLC in which the second dimension provides orthoganality plus speed."

The enabling technology for Ascentis Express is the Fused-Core(TM) particle. These high-purity silica particles measure 2.7 microns overall with a 0.5 micron-thick porous shell. Relative to columns using conventional sub-2-micron particles, Ascentis Express columns generate comparable efficiencies but with half the backpressure.

Supelco's offering of HPLC products is one part of Sigma-Aldrich's technological and value-driven products that, combined with our services and support, provide complete analytical applications solutions.

About Sigma-Aldrich: Sigma-Aldrich is a leading Life Science and High Technology company. Our biochemical and organic chemical products and kits are used in scientific and genomic research, biotechnology, pharmaceutical development, the diagnosis of disease and as key components in pharmaceutical and other high technology manufacturing. We have customers in life science companies, university and government institutions, hospitals, and in industry. Over one million scientists and technologists use our products. Sigma-Aldrich operates in 36 countries and has 7,900 employees providing excellent service worldwide. Sigma-Aldrich is committed to Accelerating Customer Success through Leadership in Life Science, High Technology and Service. For more information about Sigma-Aldrich, please visit our award-winning website at http://www.sigma-aldrich.com.

Cautionary Statement: This release contains forward-looking statements relating to future performance, goals, strategic actions and initiatives and similar intentions and beliefs and other statements regarding the Company's expectations, goals, beliefs, intentions and the like, which involve assumptions regarding the Company's operations and conditions in the markets the Company serves. The Company does not undertake any obligation to update these forward-looking statements.


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