Liquid chromatograph

Details Liquid chromatograph Liquid chromatograph

1999-06-17

2000-10-10

Therkorn, Ernest G.

Liquid purification or separation

With means to add treating material

Chromatography

210101, 210656, B01D 1508

Patent

active

061298409

ABSTRACT:
When a signal for filling up with or substituting a mobile phase is externally transmitted to a control part, the control part switches a valve for connecting a channel from a pump part to a sampling needle through a sampling loop and moves the sampling needle toward a drain port. Thus, a channel is formed through a mobile phase container.fwdarw.a pump.fwdarw.the valve.fwdarw.the sampling loop.fwdarw.the sampling needle.fwdarw.the drain port. In this channel state, the control part drives the pump at a high speed for substituting the channel connecting the pump and the sampling needle by a desired mobile phase.

REFERENCES:
patent: 5100557 (1992-03-01), Nogami et al.
patent: 5131998 (1992-07-01), Jorgenson
patent: 5158675 (1992-10-01), Allington
patent: 5180487 (1993-01-01), Saito
patent: 5567307 (1996-10-01), Karmarkar
patent: 5674388 (1997-10-01), Anahara
patent: 5738783 (1998-04-01), Shirota
patent: 5852231 (1998-12-01), Kaji
patent: 5935443 (1999-08-01), Anderson
patent: 5958227 (1999-09-01), Uematsu
United Kingdom Search Report of Sept. 15, 1999.

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