Automatic dilutor having coupled diluent and reagent plungers

Details Automatic dilutor having coupled diluent and reagent plungers Automatic dilutor having coupled diluent and reagent plungers

1975-04-07

1976-05-11

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

23253R, 734256, 222135, 222137, 417265, B01L 302, G01F 1106

Patent

active

039559300

ABSTRACT:
An automatic dilutor consisting of an upstanding calibrated diluent barrel with a lower intake portion adapted to be supported in a diluent container and having an intake check valve. A main diluent plunger is provided in the barrel and develops suction when moved upwardly. The plunger has an enlarged top operating portion with a depending diluent-metering rod on which a diluent indicating lens is adjustably mounted, being engageable with a top flange on the barrel to limit extension of the plunger in accordance with the desired amount of diluent to be dispensed. A branch conduit connects the diluent barrel through another check valve with an upstanding calibrated reagent-aspirating barrel having an outlet conduit connected to its bottom portion. An aspirator plunger is provided in the aspirating barrel, the aspirator plunger having an enlarged top end with a depending reagent-metering rod on which another indicating lens is adjustably mounted, being engageable with a top flange on the aspirating barrel to limit extension of the aspirator plunger in accordance with the amount of reagent to be dispensed. The diluent indicating lens is yieldably connected to the reagent-metering rod so that the aspirator plunger will move upwardly only to its limit when the diluent plunger is moved upwardly to its limit, simultaneously drawing the preset desired amounts of diluent and reagent respectively into the diluent barrel and the aspirating barrel. When the diluent plunger is then moved downwardly to its bottom position, the connection between the diluent indicating lens and the reagent-metering rod causes the preset amounts of diluent and reagent to be simultaneously discharged through the outlet conduit.

REFERENCES:
patent: 3197285 (1965-07-01), Rosen
patent: 3217761 (1965-11-01), Shapiro
patent: 3484207 (1969-12-01), Anthon
patent: 3556353 (1971-01-01), Echols
patent: 3572130 (1971-03-01), Goldsmith
patent: 3810720 (1974-05-01), Lartigue et al.
patent: 3837534 (1974-09-01), Natelson

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