Liquid purification or separation – Processes – Chromatography
Patent
1980-03-04
1982-01-12
Adee, John
Liquid purification or separation
Processes
Chromatography
210745, 210101, 210138, 2101982, B01D 1508
Patent
active
043104207
ABSTRACT:
A mobile phase supplying method in a liquid chromatography which is characterized in a disposition of a second plunger pump unit, in addition to the conventional way of employing one plunger pump unit (a first pump). The second plunger pump unit is disposed in series with the first plunger pump unit, being connected to the suction side of the first pump with the discharge side of the second pump, in order to synchronously supply the same amount of mobile phase discharged from the first pump to the suction side thereof by the second pump for the purpose of preventing the suction side of the first pump from being exposed to an occurrence of negative pressure. The apparatus for realizing the method is provided, in its double-pumped structure, with a connecting rod having on either end thereof a first and second plungers, between both pump units, which are synchronously and coaxially driven by a common driving system.
REFERENCES:
patent: 3862038 (1975-01-01), Takeuchi
patent: 4032445 (1977-06-01), Munk
patent: 4128476 (1978-12-01), Rock
Introduction to Modern Liquid Chromatography by Snyder et al. John Wiley and Sons, New York, pp. 101, 106, and 111-113, 1974.
Konishi Hideki
Saito Muneo
Sugawara Michiaki
Adee John
Japan Spectroscopic Co. Ltd.
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