Electrodes
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      2. Oxidation-Reduction Potential (ORP)
      3. Electrodes

      Can the HI3131B measure pH?

      The HI3131B is a refillable combination ORP electrode with a universal BNC connector.

      The HI3131B does not measure the pH of a sample. It measures the oxidation-reduction potential of a sample via an mV potential. To measure pH, check out some of our Hanna pH probes such as the HI1131B, or the HI1048B.