Diffusion cell

Details Diffusion cell Diffusion cell

1992-03-23

1993-03-30

Sever, Frank

Liquid purification or separation

Casing divided by membrane into sections having inlet

Each section having inlet

73 6447, 21032184, G01N 1300

Patent

active

051981092

ABSTRACT:
A diffusion cell to facilitate the automated removal of test aliquots of liquid from a receptor chamber of the diffusion cell so as to determine percutanous absorption through a membrane of a donor fluid from a donor chamber into the receptor chamber of the diffusion cell. There is utilized a sampling port through which the test aliquot is to be removed, the removal being achieved by means of a sample tube which is to be movable into and out of the receptor chamber. Within the receptor chamber is located a stirring device in the form of a helical coil which is to be rotated to achieve stirring and homogeneous mixing of the liquid within the receptor chamber. A refilling tube connects also with the receptor chamber to add liquid into the receptor chamber as the test aliquot has been removed. A leveling tube within the sampling port is to restore the initial preset receptor liquid volume between sampling intervals.

REFERENCES:
patent: 4594884 (1986-06-01), Bondi et al.

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