Portable pH electrode,Suitable for most pH value and controller BNC connector,When the PH electrode used for the first or long home without, activated 2 hourselectrode ball soaked in 3.3N potassium chloride solution Sino-French Measurement should be washed in distilled water and wipe dry with filter paper to prevent impurities into the electrode bulb and liquid contact Ministry should also beimmersed in the test solution within This electrode is a PH all-glass electrode that is to strong acids and alkalis. The electrode interface is BNC. The electrode is not online. This electrode is a composite of a PH glass electrode and a reference electrode. It is a measuring of a PH meter and is used to measure the hydrogen ion concentration (PH value) in an solution. pH composite electrode, not be added to the outside of the reference solution., Weight: 0.20062065842 pounds, Manufacturer: Ehwisbe