How To Extend pH Life Expectancy
pH reference poisoning is when the performance of a pH sensor slowly gets worse because the reference electrode gets dirty. A pH sensor has two electrodes: the measuring electrode, which measures the pH of the solution, and the reference electrode, which gives the measuring electrode a stable voltage to compare itself to. Most of the time, the reference electrode is filled with a solution whose pH is known. This solution is called a reference solution.
When a pH sensor is used in an industrial setting, it may be exposed to heavy metals, organic compounds, or even other chemicals. These things can get into the reference electrode and make the reference solution dirty. This contamination can change the pH of the reference solution, which can make the pH measurements less accurate.
To make an industrial pH sensor last longer, it is important to keep the reference from poisoning it. To do this, one option is to use a reference electrode that can’t be poisoned. Most of the time, this type of electrode has a reference solution that is sealed or protected. This makes it less likely that contaminants will get into the reference electrode.
Another way to make an industrial pH sensor last longer is to use a reference solution that is less likely to poison the sensor. For example, using a reference solution with a high concentration of potassium chloride (KCl) can help prevent reference poisoning because KCl is more resistant to poisoning than other reference solutions.
To make the pH sensor last longer, it is also important to clean and maintain it regularly. This includes cleaning the electrode with a mild detergent solution, rinsing it well with distilled water, and recalibrating the sensor as needed. If you don’t use harsh cleaning solutions, you can also help the sensor last longer.
It’s also important to remember that the best way to make an industrial pH sensor last longer is to limit the amount of time it spends around possible contaminants. This can be done by putting the sensor in a sealed or protected area or by installing filtration or purification systems that remove contaminants before they reach the sensor.
In conclusion, pH reference poisoning is when a pH sensor’s performance slowly gets worse because the reference electrode is dirty. To make an industrial pH sensor last longer, it’s important to prevent reference poisoning. You can do this by using a reference electrode with a design that makes it less likely to get poisoned, using a reference solution with a higher resistance to poisoning, doing regular maintenance and cleaning, and keeping the sensor as far away from potential contaminants as possible.