PH /ORP Sensor

The ability of a medium to oxidise or reduce another medium is measured by its “oxidaon-reducon potenal,” or ORP. When an oxidizer takes an electron from another molecule, it is said to be oxidising, and when a reducer gives an electron to another molecule, it is said to be reducing. A single mV value, which can be posive or negave, can be monitored by an ORP sensor to idenfy whether oxidaon or reducon is taking place. The mV value is posive when a medium is oxidising. The mV reading will be negave when it is displaying reducon. Addionally, an ORP measurement known as “Redox” is frequently used. Reducon and oxidaon are combined to form the word redox. Oxidation-reduction potential (ORP) measures the ability of a lake or river to cleanse itself or break down waste products, such as contaminants and dead plants and animals. When the ORP value is high, there is lots of oxygen present in the water. This means that bacteria that decompose dead tissue and contaminants can work more efficiently. In general, the higher the ORP value, the healthier the lake or river is. However, even in healthy lakes and rivers, there is less oxygen (and therefore lower ORP values) as you get closer to the bottom sediments (mud; see the picture below of a lake bottom). This is because there are many bacteria working hard.