What is the difference between orp and redox

Ready to invest in one of the highest quality water monitoring instruments available to create a safe, healthy environment for your company? Contact us today to speak with a representative! Please enter your email address Please enter a valid email address Please enter a password Forgot Password? Create Account. Log In Close. Live Chat. Gas Detection. What Is a pH Measurement? As oxygen molecules in the water are continuously under ion transfer which leads to oxidation or reduction.

The electrode in the redox meter acts as a donor or acceptor on contrary to the quality of water. If the water possesses oxidation properties, then the electron becomes a donor or vice versa. When the oxygen transfer taking place, the electromotive force generates due to potential difference. This electromotive force varies based on the frequency of ion exchange. The differential electromotive is then measured by an aqua-logger and is displayed by the ORP meter in mV value.

The importance of ORP measurement is essential in water technology as it is known as a measure of the healthiness of the water. As water can be easily contaminated, it is essential to be tested for ORP levels. Healthy water has oxidizing agents that produce aerated water, which shows positive ORP values.

Chemically contaminated water may possess sodium, lead, chlorine, contamination which makes it reducing water, which might give the harmful effect of free radicals.

Now that pH and ORP are differentiated and functions of individual measurement devices are discussed, it is advised to buy ORP meter and pH meters for accurate water quality testing. You can get these products at their inventory from high-end brands like Myron L , Sensorex , etc. David Cannon 16th Sep Because all the constituents of natural waters are almost never known or quantified accurately, the relationship between ORP and temperature cannot be determined on a practical basis.

However, noting the water temperature with the ORP result is recommended and encouraged to facilitate comparisons between measurement results.

ORP electrodes are prone to fouling. Any substance on the electrode — whether organic or inorganic, visible or invisible, living or not — can lead to misrepresentative readings. The measurement results will reflect the ORP of the fouling substance rather than the bulk solution. For this reason it is important to keep the sensor clean and its surface smooth. The smooth surface minimizes surface area for contamination to occur.