Patent ID: 8679333
Filing Date: 2014-03-25
Classification: B01D,B01L,B05B,F04B,G01N

Abstract:
1. An apparatus for delivering a liquid in a chromatography capillary system comprising: a first pump in fluid communication to a first flow path carrying a first portion of a liquid from said first pump to a first thermal-based flow sensor contained within an isothermal block, said first thermal-based flow sensor being operatively disposed in said first flow path and configured to produce a first signal corresponding to a flow rate of said first pump; a second pump in fluid communication to a second flow path carrying a second portion of a liquid from said second pump to a second thermal-based flow sensor contained within said isothermal block, said second thermal-based flow sensor being operatively disposed in said second flow path and configured to produce a second signal corresponding to a flow rate of said second pump; and means for controlling flow rates within each flow path in response to said first and second flow-rate signals, the means for adjusting comprising a system controller configured to adjust the flow rates of said first and second pumps proportionately.