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Abstract

A measuring arrangement, comprising: at least three half-cells, each of which has a pH-sensitive membrane, and a measuring circuit, which is embodied to register a half-cell potential of each half-cell relative to a shared reference potential. The half-cell potential of each half-cell depends on the pH-value of a measured liquid contacting its pH-sensitive membrane. The sensitivity of a first of the three half-cells corresponds to a change of its half-cell potential relative to a change of the pH-value of the measured liquid causing it; the sensitivity of a second of the three half-cells corresponds to a change of its half-cell potential relative to a change of the pH-value of the measured liquid causing it; the sensitivity of a third of the three half-cells corresponds to a change of its half-cell potential relative to a change of the pH-value of the measured liquid causing it.

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First Claim