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Illustration of a pH meter
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Purchasing Guide: pH Meters

pH meters are used to measure the acidity and alkalinity of laboratory samples

by Lab Manager
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pH meters are used to measure the acidity and alkalinity of laboratory samples. Choosing the right pH meter probe (electrode) is important to configure the instrument to your sample type. For example, electrodes with stainless steel blades can be used to directly measure pH in solid samples, such as food. When purchasing a pH meter, labs should consider how easy it is to calibrate and use as well as its accuracy. For a list of pH meter manufacturers, see our online directory:

6 Questions to Ask When Buying a pH Meter:

  1. How accurate is the instrument, and what level of accuracy do you need for your application?
  2. What electrodes are available, and are they compatible with your sample needs?
  3. What steps are involved in calibrating the instrument?
  4. Would a portable pH meter better suit your needs?
  5. What level of precision do you require?
  6. Can the instrument be easily connected to your LIMS or other laboratory management software?

Beyond pH Tests

Some manufacturers now offer multifunctional meters that offer more than just pH tests, including conductivity, salinity, temperature, total dissolved solids, and others. Some of these analyzers can run multiple tests simultaneously. If you need deeper analyses of your samples, a multifunctional analyzer may be the solution to your challenge.

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The Right Electrode

With a host of factors to consider, it can be a challenge to determine the right electrode for your pH meter. Learn about how you can identify the right electrode for your sample and application at