Automatic evaporator system

Details Automatic evaporator system Automatic evaporator system

1984-10-18

1986-08-05

Sever, Frank

Chemistry: analytical and immunological testing

Including sample preparation

Liberation or purification of sample or separation of...

159 1R, 159 471, 422 64, 422 65, 422 66, 422 67, G01N 118, G01N 2100, G01N 3100, G01N 3300

Patent

active

046043632

ABSTRACT:
In a microprocessor-controlled evaporation/concentration system, a plurality of sample solutions are automatically successively delivered to an evaporation chamber. Each sample solution is evaporated in successively delivered slug components. The underside of the bottom wall is maintained at a microprocessor-determined constant evaporation temperature by an electrical resistance heater and proportional temperature controller. Pressure in the chamber is maintained substantially on the vapor pressure versus temperature curve of the sample solution, thereby assuring a known evaporation rate. Valving controlled by the microprocessor permits automatic addition of diluent to the chamber. The prepared sample is then automatically transferred to one of multiple storage vials which are brought into successive registration with a syringe needle assembly by means of a rotatable vial storage tray. The microprocessor automatically cleanses the entire flow system with cleansing solution and/or purging gas after each sample has been evaporated/concentrated.

REFERENCES:
patent: 4429584 (1984-02-01), Beyer et al.

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