Enzyme electrode unit
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United States of America Patent
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May 8, 1990
Issued Date -
N/A
app pub date -
Sep 14, 1989
filing date -
Mar 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An enzyme electrode unit having, on the surfaces of the base electrodes thereof, an enzyme-immobilized membrane for oxidizing or reducing a target substance to be measured, and a diffusion-limiting membrane unit of a two-layer structure disposed on the surface of the enzyme-immobilized membrane, only the diffusion-limiting membrane having a lower target substance diffusion limiting effect being replaceable, thus maintaining substantially constant the general target substance diffusion limiting effect of the diffusion-limiting membrane unit, even after the replaceable diffusion-limiting membrane has been replaced.
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