Backflow prevention for high pressure gradient systems
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United States of America Patent
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Jul 8, 2008
Grant Date -
Jan 13, 2005
app pub date -
Aug 4, 2004
filing date -
Dec 9, 2002
priority date (Note) -
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Abstract
Gradient performance with high pressure gradient solvent delivery system is optimized by approximation of infinite stroke volume of high pressure pumps by the addition of pulse dampening with backflow prevention to each high pressure pump. The backflow prevention adds sufficient minimum flow resistance, thereby enhancing the performance of the pulse dampening over a wider range of flow rates resulting in consistent gradient performance.
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