Liquid chromatograph apparatus

Details Liquid chromatograph apparatus Liquid chromatograph apparatus

1989-04-18

1989-11-07

Therkorn, Ernest G.

Liquid purification or separation

With means to add treating material

Chromatography

210101, 138 30, 417543, B01D 1508

Patent

active

048790290

ABSTRACT:
Liquid chromatograph apparatus includes a solvent proportioning valve arrangement which comprises a block (21) having four inlet passages and a number of outlet passages communicating with a common outlet passage (28) and an outlet port (29) to which a tube may be attached for connection to the inlet of a pump. Each inlet passage (30) is connected to a solvent source by a tube (43) which passes into a chamber (32) mounted on the block (21). The chamber (32) is air-tight and contains a quantity of gas or air to absorb shock waves in the liquid when the diaphragm (26) blocks the inlet (30) and outlet (27) passages.

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