Patent ID: 7396469
Filing Date: 2008-07-08
Classification: G01N,Y10T

Abstract:
1. A method for improving the compositional accuracy of high pressure gradient pumps for high pressure liquid chromatography comprising the steps of: providing a first solvent line having a first set of pumps and a second solvent line having a second set of pumps said first set of pumps being in fluid communication with to a first solvent reservoir and said second set of pumps being in fluid communication with a second solvent reservoir; connecting said first set of pumps to a first pulse dampener and connecting said second set of pumps to a second pulse dampener said first pulse dampener being in fluid communication with a first backflow preventor and said second pulse dampener being in fluid communication with a second blackflow preventor wherein said backflow preventors substantially reduce fluidic cross talk between said solvent lines; connecting said backflow preventors to a mixing tee to deliver solvent composition.