Tech Tip: Tips for Smooth-Running pH Testing


Pick the right meter. A pH meter with more than minimum requirements may be the better option. Product requirements and regulations change with time. Meters with advanced features will allow for a wider range of testing and documentation of results.

Know the basics. The meter’s algorithm and displayed value expresses the amount of potential difference between the electrode’s reference to a sample being tested. During the process of electrode equilibrium (or end-point), a blockage or slowing of an electrode’s reference junction can impact the electrode’s ability to perform its task.Remember electrodes need to be rinsed and blotted before each test.

Maintenance is critical. Periodic and proper cleaning is required. Protein and other contaminants can build up on the electrode reference junction or sensing areas, often resulting in a longer time to endpoint. Cleaning solutions specifically designed for differing electrode styles are required.

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About Stephen Zdun

Laboratory Repair Technical Sales Specialist, Nelson-Jameson, Inc.
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