ROSS pH Electrodes by Thermo Fisher Scientific

"It is very simple to use. It has lasted for around 6 years."

"This product was easy to use and easy to calibrate. It is very good for every day use. The only problem with the product was that the stopper for the buffer, which is used for atmospheric equilibrium, is not well made. It does not stay in the hole and pops off often. Under constant use, this is not an issue, but for storage and for infrequent use, this becomes a problem as the buffer inside the electrode evaporates over time."

"The electrodes we have are usually working extremely well. As long as they are treated in the correct way (i.e closing the hole after the measurement series and storing them correctly), they work for a long time. They give stable readings and even work well in suspensions. The change of the inner electrolyte is a bit awkward and could be improved, but on general terms I am very happy with this product."

"This electrode is very reliable. We have had extremely good experiences with it over the years. One problem is sometimes the replacement of the filling solution. It is not always easily possible to take out all the solution, rinse the system with water, take out the water and so on. Filling is easy, taking out is more of a problem. Overall that takes quite a bit of patience but does not change the otherwise very beneficial properties of this electrode. "

"A little expensive."