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Liquid junction reference electrode and methods of use thereof

  • US 6,896,793 B2
  • Filed: 03/07/2002
  • Issued: 05/24/2005
  • Est. Priority Date: 03/07/2001
  • Status: Active Grant
First Claim
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1. A reference electrode comprising:

  • (a) a reference sensor;

    (b) a bridge electrolyte channel in fluid communication with said reference sensor; and

    (c) a connector channel connected to the bridge electrolyte channel, said connector channel comprising a sample inlet channel and a sample outflow channel through which a sample may flow, a bridge electrolyte well for retaining a volume of a bridge electrolyte solution, and a bridge electrolyte port which connects said bridge electrolyte well with said bridge electrolyte channel;

    wherein said bridge electrolyte well is dimensioned to provide a liquid junction between the sample and the bridge electrolyte solution, and wherein said liquid junction has a width that exceeds the diameter of said bridge electrolyte port.

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