How long can the electrode of a typical pH meter last?
This question is often asked by many users, but it cannot be answered in just a few words. Firstly, introduce the national standard (ZBN50003-88) The regulation on the "service life" of electrodes: "Warranty period of electrodes: Within one year of storage from the manufacturing date marked on the electrode, when unpacked and used, their performance should meet all the requirements of this standard. During the warranty period, if it is found that the electrode cannot work normally due to the manufacturer's reasons, the manufacturer should be responsible for repairing or returning it." It is clear here that the quality assurance period of electrodes is based on the premise of not having been used, and the period is one year. Therefore, many people generally say that the service life of electrodes is one year, which is actually incorrect. In addition to the quality of the electrode itself, there is also an issue of use and maintenance. Firstly, the use of media, the same electrode will come into contact with different media. Some media are very clean, such as tap water, while others are strong acids, alkalis, or even high temperatures. The second is the usage time, some are used occasionally, and some are used continuously for a long time. The third is whether it is cleaned and maintained, so there will be significant differences. Generally speaking, if an electrode fails in a short period of time, it may be due to incorrect electrode model selection or improper maintenance by the user. In this case, the manufacturer is not responsible for compensation. Of course, if the electrode has been used but still has a good appearance and no signs of poor use, it may be due to electrode quality issues, and the manufacturer is generally responsible for refunding compensation. As for some electrodes that claim to have a long lifespan, there are actually some issues. The general usage time of electrodes is six months to one year, and industrial pH electrodes with poor usage conditions may have a shorter usage time.
