The pH meter is an electrical device that tests the activity of hydrogen-ion (acidity or alkalinity) in solution. A pH meter contains a voltmeter connected to a pH-reacting electrode and a reference (non-volatile) electrode.


What is pH?

PH is a calculation of the acidity or alkalinity of a solution. It gives a value on a scale from 0 to 14, where seven is neutral, less than seven is acidic, and greater than seven is alkaline (or basic). When you approach Zero, the solution becomes acidic, and when you come to 14, the answer becomes alkaline.


What is ORP?

We do not see in the world, but continuous electron exchange occurs between objects in the air, the earth, water, and our bodies. This condition is commonly known as ion exchange.

Non-electrons actively search for electrons wherever they can be found: these substances are called oxidizing agents.

Conversely, substances with high electrons can donate their extra electrons, called reducing agents or anti-oxidizing agents.


The ability to reduce oxidation, or ORP, is a measure that indicates the level at which a substance is capable of producing oxidation or reducing other sensations.


pH meter

The electrode that responds to pH is usually glass and refers to the electrode of silver chloride, although sometimes a mercury-mercurous chloride (calomel) electrode is used. When two electrodes are submerged in a solution, they act as a battery. The glass electrode forms a power charge (charge) directly related to the hydrogen-ion function in the solution (59.2 milliliters per unit pH at 25 ° C [77 ° F]), and the voltmeter measures the potential difference between glass. And reference electrodes.


ORP meters

ORP meters are devices designed to measure oxygen power and reduce water. They are also known internationally as redox probes. These chemicals or subgroups form redox pairs, resulting in the loss of electrons. Technically it measures the number of electrons lost as potential redox energy in water.


ORP meters are used to measure sewage and water quality pollution. The ORP meter calculates the redox energy by measuring the electromotive energy of the electron taken to transfer from a reduced form to an oxidized type. We cannot use these ORPs for all types of water tests. Factors such as pH level have a significant impact on ORP learning. If the pH of the water is more than 9.5, then the ORP meters become an invalid method of measuring water level.

Therefore, when using ORP meters, it becomes a little more complicated. Although, the simple answer to this question can be used when water is purified or processed.