Invention Grant
US07674375B2 Closed loop flow control of a HPLC constant flow pump to enable low-flow operation
有权
HPLC恒流泵的闭环流量控制，以实现低流量运行
- Patent Title: Closed loop flow control of a HPLC constant flow pump to enable low-flow operation
- Patent Title (中): HPLC恒流泵的闭环流量控制，以实现低流量运行
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Application No.: US11569301Application Date: 2005-05-20
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Publication No.: US07674375B2Publication Date: 2010-03-09
- Inventor: Geoff C. Gerhardt , Joseph A. Luongo
- Applicant: Geoff C. Gerhardt , Joseph A. Luongo
- Applicant Address: US MA Milford
- Assignee: Waters Technologies Corporation
- Current Assignee: Waters Technologies Corporation
- Current Assignee Address: US MA Milford
- Agent Jamie H. Rose
- International Application: PCT/US2005/017923 WO 20050520
- International Announcement: WO2005/113457 WO 20051201
- Main IPC: B01D15/08
- IPC: B01D15/08
Abstract:
A method and apparatus for monitoring and controlling nano-scale flow rate of fluid in the operating flow path of a HPLC system provide fluid flow without relying on complex calibration routines to compensate for solvent compositions gradients typically used in HPLC. The apparatus and method are used to correct the flow output of a typical, analytical-scale (0.1-5 mL/min) HPLC pump to enable accurate anti precise flow delivery at capillary (
Public/Granted literature
- US20080245136A1 Closed Loop Flow Control of a Hplc Constant Flow Pump To Enable Low-Flow Operation Public/Granted day:2008-10-09
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