Sonda de ph multimedia bluelab

These pH electrodes work in both the solution pH meter, the Combo Meter and the Guardian. They are easy to clean thanks to their cylindrical glass structure.
Special crystal of high quality. Gel-filled electrode (non-refillable) that does not need maintenance with double protection gasket that gives it a longer life. The floor electrode is made with a housing that is breakage resistant, although you also have to use a dibber to make a hole in the floor before using it. This floor electrode also works if used in solution but it will take longer to take the pH measurement because of the protective housing.