Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1997-03-11
1998-12-22
Brock, Michael
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
210101, 2101982, 137 7, G01N 3034
Patent
active
058522310
ABSTRACT:
In a low pressure gradient liquid chromatograph, two eluting liquids are transferred while they are being mixed with each other, whereby the mixing ratio thereof is changed with time. The mixing is performed by alternately opening and closing check valves provided in the liquid passages of the eluting liquids during a time period corresponding to the actual suction stroke of a plunger pump. The mixing ratio is determined by the time periods during which the check valves are opened, respectively. A detector is provided for detecting the pressure of the mixed liquid and the timing for opening and closing the check valves is changed in accordance with the detected pressure.
REFERENCES:
patent: 4032445 (1977-06-01), Munk
patent: 4128476 (1978-12-01), Rock
patent: 4233156 (1980-11-01), Tsukuda et al.
patent: 4595495 (1986-06-01), Yotam et al.
patent: 4767279 (1988-08-01), Dourdeville et al.
Brock Michael
Hitachi , Ltd.
LandOfFree
Elution liquid control for a liquid chromatograph does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Elution liquid control for a liquid chromatograph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elution liquid control for a liquid chromatograph will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2049823