Polarographic membrane apparatus

G - Physics – 01 – N

Patent

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324/27

G01N 27/48 (2006.01) G01N 27/40 (2006.01) G01N 33/487 (2006.01)

Patent

CA 1077566

ABSTRACT OF THE DISCLOSURE An improved apparatus, such as a polarographic elec- trode apparatus, is described wherein a semi-permeable membrane is supported against a convex surface and wherein the likeli- hood of damage to such membrane during mounting and use is minimized. In the apparatus the membrane is stretched over the convex surface of a first member in a manner allowing, during assembly of the apparatus, any fluid located between the mem- brane and the convex surface to escape therefrom around the edges of the membrane. The membrane is clamped between the convex surface of said first member and a complemental concave surface of a second member such that the membrane is held in stretched relationship against and in close contact with the convex surface. A gasket is also included to form a fluid- tight seal between said membrane and said second member.

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