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News

Supelco expands HPLC column range to speed analysis times

Sigma-Aldrich Research Biotech : 04 September, 2008  (New Product)
Supelco, a division of Sigma-Aldrich, has expanded the Ascentis Express product range with 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 RP-Amide, an embedded polar group chemistry, provides an alternate selectivity to the conventional C18 and C8 phases.

'The combination of the RP-Amide advanced bonding chemistry and the Fused-Core particle provides a polar column for high-speed and high-resolution separations,' said Wayne K Way, marketing manager at Supelco in Bellefonte, Pennsylvania, USA. 'The Ascentis Express RP-Amide provides improved peak shape for basic compounds.'

The key technology in the Ascentis Express column is the Fused-Core 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.
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