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pH pH can influence the behavior of a coating as well as the reactions required to give the appropriate properties that are desired. In addition, measuring the pH of raw materials such as solvents or water is a good quality control check. pH electrodes Combination pH electrodes, which are most prevalent today, include a sensing half-cell and a reference half-cell. The sensing half-cell measures the pH, while the reference half-cell acts as a constant reference for the sensing cell. When choosing an electrode, please be aware of the application it is going to be used in. For example, when working with a latex paint, one should not use a general-purpose electrode, but rather a double-junction electrode that would not clog very easily. |
| 1. Handling – Electrodes should be rinsed between samples with deionized water, if possible. Try not to wipe an electrode as this can cause erroneous readings due to static charges. 2. Storage – Always keep the pH electrode moist. We recommend that the electrode is stored in a pH 4 buffer solution. NEVER store an electrode in distilled or deionized water – this will cause ions to leach out of the glass bulb and render the electrode useless. Temperature Compensation Temperature compensation is required for accurate, repeatable measurements. Because pH values are sensitive to temperature, most pH applications require some form of temperature compensation. Most meters today, and the ones listed on the following pages, have automatic temperature compensation (ATC), in which the meter compensates for temperature differences in a sample. pH meters BYK-Gardner offers three different styles of meters: Pocket, hand-held, and benchtop. All of the meters accept pH probes with BNC connectors to suit almost any application. |