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HPLC columns with improved speed and resolving power
April 2009
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Sigma-Aldrich Co.

Supelco, a division of Sigma-Aldrich, has expanded the Ascentis Express product line, a family of innovative HPLC columns designed to provide the analysis speed and resolving power of sub-2-micron columns with a 50 percent reduction in backpressure. Ascentis Express HPLC columns are now available in nano and capillary dimensions. Complex analysis such as tryptic digests and other proteomic applications will benefit from the high peak capacity. The key technology in the Ascentis Express column is the Fused-Core particle, high-purity silica particles that 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.

Sigma-Aldrich Co.
www.sigmaaldrich.com
800-325-3010

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