C - Chemistry – Metallurgy – 12 – M
Patent
C - Chemistry, Metallurgy
12
M
C12M 1/40 (2006.01) C12N 11/08 (2006.01) C12Q 1/00 (2006.01) C12Q 1/26 (2006.01) C12Q 1/54 (2006.01) G01N 27/30 (2006.01) G01N 27/40 (2006.01)
Patent
CA 2140436
2140436 9402585 PCTABS00030 Sensor devices for examining fluid samples having, between the sample under examination and a detector, a membrane made of polyvinyl chloride in un-plasticised form. This membrane material acts as a barrier to paracetamol and sugars but is permeable to hydrogen peroxide and to oxalate, so these species can be determined after passing through the membrane. When they are not present as such in the sample, they may be formed from analytes which are sought (e.g. by enzymic action, which is especially applicable to the determination of glucose, using an oxidase enzyme). The membranes may be made by solvent casting, conveniently to a thickness of 10 to 40 µm, and used in electrolytic systems with a platinum anode. The membrane material can be formed into multi-layer membranes, which may incorporate layers of material to protect it or modify the permeability, or added materials for example enzymes.
Benmakroha Yazid M.
Christie Ian M.
Reddy Subrayal M.
Vadgama Pankaj M.
Smart & Biggar
The Victoria University Of Manchester
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