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Manual: Theory and Practice of pH Measurement
www.emerson.comTHEORY AND PRACTICE OF pH MEASUREMENT SECTION 1.0 OVERVIEW 3. 2.1 GENERAL In nearly every industrial and scientific application, pH is determined by measuring the voltage of an electrochem-ical cell. Figure 2-1 shows a simplified diagram of a pH cell. The cell consists of a measuring electrode, a refer-
Manual: Theory and Practice of pH Measurement - Emerson
www.emerson.com1.0 OVERVIEW The determination of pH is one of the most common process chemical measurements made today. This booklet explains the principles behind the measurement and discusses ways of avoiding common pitfalls.