The frequency of measuring might be one of the biggest trends in pH meters. “It used to be an occasional measurement, but now it’s every sample in some cases,” says George Porter, titration product manager at Metrohm (Riverview, FL).
Mature product lines such as pH meters are fundamentally limited in underlying technology, so they evolve through adding features and functionality. High-end pH meters often come with USB or Bluetooth communications and networking capability.
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The expanded features in today’s pH meters reflect the broad use of this technology. Researchers use pH meters in a wide range of research fields—including biological and chemical, agricultural and environmental, and more—and virtually all kinds of manufacturing.