Sensor membrane for indicating the PH of a sample, the fabrication and use thereof
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United States of America Patent
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Dec 29, 1998
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N/A
app pub date -
Jan 19, 1996
filing date -
Sep 30, 1991
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Abstract
For the purpose of reversible optical indication of the pH of a sample, a hydrophilic accommodating layer is disposed on a hydrophobic mechanically stable support element, which layer contains the indicator dye proper in an immobilized form. This provides a sensor membrane which can be fabricated in a simple manner and is cost-effective, which has a rapid response time and can also be fabricated as a mass product to be used only once.
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