Liquid purification or separation – Flow – fluid pressure or material level – responsive – Proportionate feed means
Patent
1983-09-23
1984-10-23
Adee, John
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Proportionate feed means
210104, 210142, 2101982, B01D 1508
Patent
active
044787138
ABSTRACT:
In the automatic installation for liquid chromatography according to the invention, the container of product to be fractionated is associated to a measuring container and is provided, as are the containers of eluents, with low level detector means; feed valves are interposed between said containers and the injection pump whereas output valves are interposed between the outlet from the column and the collector containers; a control unit comprises a safety device connected to the low level detectors to control the stoppage of the pump whenever necessary, and a control device receiving the signals from detection means connected to the output of the column and controlling the measuring container and said valves to perform successive cycles of chromatography each one including the steps of injecting a quantity of product, admitting at least one eluent and collecting the or each corresponding fraction.
REFERENCES:
patent: 2692820 (1954-10-01), Alway
patent: 3012156 (1961-12-01), Simmons
patent: 3701609 (1972-10-01), Bailey
patent: 3826905 (1976-08-01), Valkama
patent: 3963614 (1976-06-01), Ozowa
patent: 4116046 (1978-09-01), Stein
patent: 4151086 (1979-04-01), Frosch
patent: 4311586 (1982-01-01), Baldwin et al.
patent: 4422942 (1983-12-01), Allington
Fresenius' Zeitschrift fur Analytische Chemie, vol. 261, fascicule 4/5, 1972.
International Laboratory, vol. 9, No. 11/12, (1979).
Measurement Techniques, vol. 17, No. 11, Nov. 1974.
Boschetti Egisto
Girot Pierre
Adee John
Pharmuka Laboratoires
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