Pump for liquid chromatography and a chromatograph including the

Details Pump for liquid chromatography and a chromatograph including the Pump for liquid chromatography and a chromatograph including the

1981-11-06

1983-12-13

Adee, John

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Proportionate feed means

2101982, B01D 1508

Patent

active

044203934

ABSTRACT:
A reciprocating pump for liquid chromatography, particularly high-performance liquid chromatography, comprising at least one pump unit including a chamber, a valve-controlled inlet, a valve-controlled outlet, a single reciprocatory element arranged for reciprocating movement within the chamber, and varying means for varying the length of stroke of the said reciprocatory element. The pump further comprises a constant-speed driving means for driving the pump unit via its varying means. The driving means are such as to ensure reciprocating movement of the reciprocatory element at a constant frequency between 1 and 100 strokes per second.

REFERENCES:
patent: 3984315 (1976-10-01), Ernst et al.
patent: 4045343 (1977-08-01), Achener
patent: 4191649 (1980-03-01), Hartwick
patent: 4311586 (1982-01-01), Baldwin et al.

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