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Ph sensor

  • US 8,062,234 B2
  • Filed: 06/23/2005
  • Issued: 11/22/2011
  • Est. Priority Date: 06/24/2004
  • Status: Expired due to Fees
First Claim
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1. A pH sensor configured for incorporation into a catheter drainage system wherein the pH sensor comprises:

  • a polymer matrix chemically bound to a pH indicator, wherein the pH indicator only responds to sustained contact with a liquid or biofilm at an increased pH.

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