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pH Electrodes/Sensors
The pH value is an intrinsic value of all aqueous solutions: Each aqueous solution has a pH value. At 25°C pure water contains H+ and OH- ions in equal amounts.This state is called neutral with a pH value of 7. The pH scale covers values between 0 and 14. Acids have pH values towards 0, caustic solutions have pH values towards 14.
Applications
The pH value is important in almost any area concerned with water: The European drinking water directive demands a pH value of 6.5 – 9.5 for drinking water both for hygienic and technical reasons. Water with pH lower than 6.5 can cause corrosion of metal pipes and give rise to high concentrations of heavy metal ions in drinking water. Corrosion is also a very important issue for cooling towers and boiler feed water and in fact for any water in contact with metal pipes and tanks. For swimming pools hygiene and health are the main reason for restricting the pH value to 6.8 – 7.6. Too high values affect the disinfection process, and too low values may lead to skin irritation. Industrial waste water has to be neutralized prior to release into the sewer system. In waste water treatment the pH value is controlled to remove heavy metals or to optimize ORP reactions such as Chromate reduction, followed by neutralization. In process water the pH value is one oft he most important parameters. It can affect product quality and production efficiency. It might even be vital for a chemical reaction such as polymerisation.
Process Water pH Sensors / Electrodes
Cooling And Boiler Feed pH Sensors / Electrodes
Waste Water Treatment pH Sensors / Electrodes
Ultra Pure Water Sensors pH Sensors / Electrodes
Drinking Water / Beverages pH Sensors / Electrodes
Swimming-Pool pH Sensors / Electrodes
Laboratory pH Sensors / Electrodes
Fluoride Containing Media pH Sensors / Electrodes
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ORP Redox Sensors Electrodes
ORP Redox Sensors
Oxidation-reduction potential, ORP in short, is a measure for the concentration of oxidizing and reducing agents in water. Its value is influenced both by pH and temperature. ORP is a sum parameter that gives no information on the concentration of a single substance in a mixture.
Applications
ORP (Oxidation reduction potential) measurements are used to monitor chemical reactions involving electron transfer. In drinking water treatment it can be found in Ozone treatment and the removal of iron, manganese, and nitrate as well as in disinfection steps. In swimming pools the German DIN 19643 requires ORP measurements as a hygiene parameter and decrees maximum and minimum values for fresh water, pool water, and salt water. In waste water treatment ORP is measured in the denitrification process and in detoxication of industrial waste water.
Process Water ORP Redox Sensors / Electrodes
Disinfection ORP Redox Sensors / Electrodes
Waste Water Treatment ORP Redox Sensors / Electrodes
Cooling And Boiler Feed Water ORP Redox Sensors / Electrodes
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