Top 10 Mistakes in pH Measurement

Are you making errors when measuring pH?

Here are the top 10 mistakes that our technical staff see most often.

pH electrode

Proper technique in pH measurement is a matter that is a bit hazy among some of our users. Questions like “how often should I calibrate?,” and “how often should I replace my electrode?” are commonplace for anyone starting a pH measurement process.

The team at Hanna has seen a lot of good (and bad) pH measurement practices throughout the company’s 38 years of experience.

We’ve compiled a list of the top 10 mistakes in pH measurement, as well as advice on what to do instead.

Phosphorus in Saltwater Reef Aquariums


Phosphorus is an essential element for all life forms.

While phosphorus is vital for growth in plants and animals, it can be problematic for aquaria inhabitants, particularly coral. In water, phosphorus exists almost solely in the form of phosphate, or PO43-. There are several forms of phosphate, but the two forms most important for aquaria are organophosphate and orthophosphate.

Should You Be Teaching Marine Science


Oceans, estuaries, and bays are some of the most important natural resources worldwide and provide commercial, environmental, and intrinsic values.

Oceans provide 10% of human protein consumption in the form of fish and shellfish, are one of the world’s largest carbon sinks which help mitigate increased atmospheric CO2 levels, and provide educational and recreational values.