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  • pH Meters and ORP Meters
    pH meters and ORP meters are used to measure or monitor potential of hydrogen (pH) and oxidation-reduction potential (ORP). pH is the negative logarithm of the hydrogen ion activity in solution. The pH value of a substance is directly related to the ratio of the hydrogen ion [H+] and the hydroxyl
  • Strantrol (R) Impact Dual Controller Controls Both PPM and ORP for High School Pool
    Zionsville Community High School in Zionsville, Ind., installed a controller for each of its two indoor swimming pools. The controllers could not adequately regulate the parts per million (PPM) and oxidation-reduction potential(ORP) levels in the pools, which were thrown off balance by a newly
  • The Control of pH & Oxidation Reduction Potential (ORP) in Cooling Tower Applications
    The importance of keeping cooling tower water in proper chemical balance is becoming clearer. Cooling tower treatment control systems can limit scale formation to improve efficiency, limit corrosion to increase the service life of the cooling water system, and maintain a residual halogen level to
  • Introduction to Oxidation Reduction Potential Measurement (.pdf)
    Oxidation Reduction Potential (ORP or Redox Potential) measures an aqueous system's capacity to either release or accept electrons from chemical reactions. When a system tends to accept electrons, it is an oxidizing system. When it tends to release electrons, it is a reducing system. A system's
  • Controlling The Addition Of Chlorine Into A Process
    There are several methods for controlling the addition of chlorine into a process. These methods include flow proportional injection, ORP (oxidation reduction potential) or a residual chlorine analyzer. Each method measures a different process characteristic.
  • Advanced Oxidation Ditch Performance (.pdf)
    denitrification even without mixing during the aeration-off period. Use of an Oxidation-Reduction Potential (ORP) meter is also desirable to improve process control. At selected times the aerators are turned off and the mixers are turned on to maintain channel flow and biomass suspension. During the off period
  • FCE TM: Groundbreaking Measurement of Free Chlorine Disinfecting Power in a Handheld Instrument
    . These additives. react to FAC causing a color change in the test. sample. While they may detect the presence of FAC,. they do not directly measure the electrochemical. characteristic of FAC responsible for its disinfecting. power: Oxidation-Reduction Potential (ORP). They. give an incomplete