High Purity pH Measurement

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High Purity pH Measurement

Instrumentation and Operational Considerations for On-Line pH Measurement in Samples Below 10 μS/cm Conductivity
Ordinarily pH measurements are made in water with 1,000 to 10,000 μS/cm conductivity. The conductivity comes from dissolved solids which are typically salts but also acid or base. These dissolved substances are in the solution in ion form which makes such solutions conducting. With conductivities of 1,000 μS/cm or more, an ample supply of mobile ions provides pH electrodes with a good electrical circuit to yield fast, accurate pH readings. In pure water with low conductivity, standard pH electrodes exhibit less reliable results. They respond more slowly, drift, and do not reproduce calibration results between buffers and grab sample
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2017-05-12T19:25:18+00:00 November 1st, 2016|