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Chlorine Dioxide (CLD)

What is Chlorine Dioxide (CLD)?

Chlorine dioxide is a neutral chlorine compound. It is very different from elementary chlorine, both in its chemical structure (ClO2) and in its behavior. One of the most important qualities of chlorine dioxide is its high water solubility, especially in cold water. Chlorine dioxide does not hydrolyze when it enters water; it remains a dissolved gas in solution. Chlorine dioxide is approximately 10 times more soluble in water than chlorine. It is not affected by pH and has an excellent residual effect remaining active for hours to days. It does not interact with ammonia or ammonium. It is effective in cold temperatures.

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Why is Chlorine Dioxide Measurement Necessary?

Chlorine dioxide is one of the most effective disinfection methods measurements in the water industry today. These measurements ensure effective use of chlorine dioxide for disinfection purposes as well as other applications. Under dosage can be ineffective and over dosage results in excess Chlorite by product formation. It is extremely effective in controlling legionella.

Pre-oxidant for drinking water safety

Fruit and other foods washing and disinfection

Sanitizing production lines

Disinfecting medical equipment

Bleaching of wood pulp

Cooling tower disinfection

Bottle washing

How is Chlorine Dioxide Measured?

An amperometric sensor design consists of two electrodes (anode and cathode), a membrane and fill solution. These sensors measure a change in current caused by the chemical reduction at the cathode. A membrane and electrolyte help to control the reaction. Constant flow rate and pressure are controlled to ensure an accurate measurement.

ORP can also be used with relatively clean water and Chlorine Dioxide concentrations less than 3ppm. While it doesn’t specifically measure chlorine, it responds to all oxidation reduction reactions present and is indicative of free sanitizer available.

Chlorine Dioxide

Our dependable chlorine dioxide sensor features amperometric measurement technology. Add our flow cell, flow regulator, and display for a complete system, or use your own.

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Popular ProductsSensorex Chlorine Dioxide Best Sellers

FC72 – Flow Cell for Free Chlorine (FCL) and Chlorine Dioxide (CLD) Sensors

Our FC72 flow cell facilitates high-accuracy measurements of free chlorine and chlorine dioxide by preventing air bubble formation on the…

Add to Cart | $418.60

FCL – Free Chlorine Sensor, Amperometric

Chlorine exists in different chemical forms in solution, including free chlorine (hypochlorite ion and hypochlorous acid) and combined chlorine. Free…

Add to Cart | $1,337.80

CLD – Chlorine Dioxide Sensor, Amperometric

Our dependable chlorine dioxide sensor features amperometric measurement technology. Designed for use in disinfection applications. Sensor directly outputs a 4-20mA…

Add to Cart | $1,369.90

FM001 – Flow Regulator (0.1-1.0 gpm)

Our FM001 Water Flow Regulator allows for simple flow control. It is recommended for usage with the FCL Series Free…

Add to Cart | $120.90

FCLA-5018 – Maintenance Kit, Free Chlorine

Keep your free chlorine amperometric sensors running for extended lifetime and improved accuracy using our FCLA-5018 free chlorine maintenance kit.…

Add to Cart | $207.70

CLDA-5018 – Maintenance Kit, Chlorine Dioxide

Keep your chlorine dioxide amperometric sensors running for extended lifetime and improved accuracy using our CLDA-5018 chlorine dioxide maintenance kit.…

Add to Cart | $207.70

LPM100 – Display, Loop-Powered 4-20mA

The LPM100 is a durable, loop-powered 4-20mA display for use in process monitoring applications. Compatible with any sensor with a 4-20mA output,…

Add to Cart | $627.80

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