Liquid purification or separation – Processes – Chromatography
Patent
1987-02-04
1988-03-01
Therkorn, Ernest G.
Liquid purification or separation
Processes
Chromatography
210101, 2101982, 222 57, 222134, 366160, B01D 1508
Patent
active
047284340
ABSTRACT:
In a process of liquid mixing, more especially for use in mixing the solvents of an eluent for liquid chromatography, the liquids are supplied from separate reservoirs (1-4) to a common conduit (13) via fluid flow control valves (5-8). Predetermined pressure drops are maintained across each valve by arranging appropriate pressures in the reservoirs (1-4) and the conduit (13). The rate of flow of each liquid is determined by setting each valve (5-8) to present a predetermined flow resistance calculated from the formula ##EQU1## where L=the flow resistance of the valve .DELTA.H=the pressure drop across the valve S=the specific gravity of the liquid and I=the desired rate of flow of the liquid. The calculation and automatic actuation of the valves is effected by an electronic control (14) incorporating a microprocessor which may be programmed to vary the liquid mixture with time to provide a desired elution gradient.
REFERENCES:
patent: 3398689 (1968-08-01), Allington
patent: 4045343 (1977-08-01), Achener
patent: 4128476 (1978-12-01), Rock
patent: 4310420 (1982-01-01), Konishi
patent: 4311586 (1982-01-01), Baldwin
patent: 4347131 (1982-08-01), Brownlee
patent: 4422942 (1983-12-01), Allington
patent: 4478713 (1984-10-01), Girot
patent: 4595495 (1986-06-01), Yotam
patent: 4595496 (1986-06-01), Carson
Magnetopulse Limited
Therkorn Ernest G.
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