pH is one of the most common water quality parameters measured in a wide range of different applications.


Online pH measurement is traditionally carried out using a glass bulb electrode with a junction (or two) between the electrolyte and the sample. A better approach to minimise drift and reduce maintenance is to use a non-porous pH electrode so the electrolyte doesn’t become contaminated over time.

This makes also makes it the ideal pH sensor for samples with low conductivity or those with high or low pH.

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Products for this application

s::can ammo::lyser

A ion selective electrode for ammonium with integrated pH and potassium measurement

s::can pH::lyser

Non-porous, low maintenance online pH sensor

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How a non-porous pH electrode works and what benefits it can bring

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Established in 1971 PMA is a well-recognised provider of online instrumentation for process control and compliance monitoring. With expertise in analytical techniques such as Photometry, Colorimetry, Ion-selective electrodes (ISEs), Titration, Fluorescence, Ultrasonics and more.

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