Methods and apparatus for determining the rate of movement of a

Details Methods and apparatus for determining the rate of movement of a Methods and apparatus for determining the rate of movement of a

1986-08-29

1988-04-26

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21032163, B01D 1300

Patent

active

047403098

ABSTRACT:
A diffusion cell for use in determining the absorption rate of a study substance through a permeable membrane. The cell includes a receptor chamber which contains receptor fluid to receive study substance absorbed through the membrane. The receptor chamber includes a fluid inlet and a fluid outlet. A rotary stirrer is situated adjacent the fluid outlet. The stirrer is rotated so as to rotate the receptor fluid in the receptor chamber in such manner that the fluid pressure is greater at the outlet than at the inlet, so that the stirrer defines a pump which pumps receptor fluid outwardly through the outlet, then through a detector, and then back into the receptor chamber through the inlet. The detector determines the concentration of study substance within the receptor fluid.

REFERENCES:
patent: 3757947 (1973-09-01), Wakefield et al.
patent: 4594884 (1986-06-01), Bohdi et al.

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