The Best Chlorine Dioxide Gas Detector (Sanitization, Disinfectant, Abatement)

Chlorine Dioxide Detector, ClO2 Detector -

The Best Chlorine Dioxide Gas Detector (Sanitization, Disinfectant, Abatement)

Chlorine dioxide gas is frequently used in industrial applications to sanitize and disinfect products, surfaces, and areas. The gas is notable for its antimicrobial properties and is commonly used to disinfect drinking water. Despite its beneficial uses, chlorine dioxide gas can pose a hazard to humans if it is not monitored properly. Inhalation of the gas can cause irritation while allowing the gas to react with other substances may lead to fire or even an explosion. To best reduce the risk of chlorine dioxide gas, a chlorine dioxide gas detector should be employed to continually monitor the concentration of chlorine dioxide gas present in a given location.

Pros

Cons

  • Chlorine dioxide is a highly reactive gas
  • Chlorine dioxide gas detectors are used to detect the amount of chlorine dioxide gas present in an area where the gas is readily employed for disinfection purposes
  • Chlorine dioxide gas detectors may be useful in healthcare settings, wastewater treatment, food and beverage manufacturing, swimming pool cleaning, and more
  • Chlorine dioxide gas detectors vary in a large price range from $100s to $10,000s, depending on the sensitivity and quality of the device
  • ClO2 is tricky to calibrate, it must be generated or another gas can be used as an alias gas calibrator.

What is the Best Chlorine Dioxide Gas Detector?

Chlorine dioxide detectors can be a worthwhile purchase for those needing to test for chlorine dioxide gas. They can be purchased from several online retailers. Some examples of effective devices include:

How is Chlorine Dioxide Gas Detected?

Chlorine dioxide gas can be detected using a chlorine dioxide gas detector. Although it is colored and has an odor, only a chorine dioxide gas detector can accurately monitor the concentration of chlorine dioxide gas. More specifically, the detector should use ppm or ppb monitoring equipment instead of explosive capacity LEL monitoring equipment.

What is in a Chlorine Dioxide Gas Sensor?

Like most detectors, a chlorine dioxide gas detector is composed of several key parts. The ClO2 sensor is critical to detecting the presence of the chlorine dioxide gas. These are typically chlorine dioxide gas sensor using electrochemical gas sensing technology. The ClO2 gas causes a chemical reaction in electrochemical sensors, resulting in a current that is directly proportional to the gas concentration present. The sensors consume extremely little power and respond well to a variety of gas concentrations across a wide range of environmental conditions.

What is Chlorine Dioxide Gas?

Chlorine dioxide gas is denoted by the chemical symbol, ClO2. At room temperature, it appears as a yellow-green gas with a faintly bleach-like odor. It has many important applications, particularly for disinfection.

Is Chlorine Dioxide Gas Hazardous?

Yes.

Chlorine dioxide can have negative effects on the human body when it is inhaled. Certain symptoms may include:

  • Skin irritation
  • Eye irritation
  • Nose irritation
  • Throat irritation
  • Coughing
  • Wheezing
  • Shortness of breath
  • Pulmonary edema

Chlorine dioxide gas is also highly flammable and highly explosive. It is very reactive, so it is important that it is kept away from chemicals with which it may interact.

What is a Chlorine Dioxide Gas Detector?

A chlorine dioxide gas detector is a monitoring device used to measure the concentration of chlorine dioxide gas present in a air. 

Chlorine dioxide gas detectors come in many different form factors and features.

These devices are often used to confirm a target ClO2 concentration that a saniting technician plans to target. Or the inverse, used to monitor safe levels of ClO2.

Please note that chlorine is not the same as chlorine dioxide. Chlorine gas detectors should not be used to detect the presence of chlorine dioxide gas.

Are there ClO2 sensor interference gases?

Unfortunately, electrochemical sensors are not completely selective, and they respond to other gases present in the environment.

The probable interferences that may be experienced when utilizing the ClO2 Detector are listed below. The table shows the Chlorine Dioxide sensor's relative response to 1 PPM of the listed gas, given as a relative PPM Chlorine Dioxide signal. A chlorine dioxide sensor, for example, would provide a signal equivalent to 1 PPM of chlorine when exposed to a gas sample containing 1 PPM of Cl2. If a mixture of chlorine dioxide and that gas is encountered, a negative sign (-) indicates an interference that could result in low ClO2 values.

Please note, the below values are a rough guide. These ratios can change with sensor manufacturer and sensor range selections.

How Can I Calibrate a ClO2 Detector?

Although chlorine dioxide standards are not available for calibration, chlorine standards can be utilized because a chlorine dioxide sensor responds 1:1 to chlorine. This ratio may change slightly with different ClO2 sensor manufacturers and ranges. Established NO2 or Cl2 certified NIST gas bottles can be used as a proxy to calibrate ClO2 sensors.

How Do You Select a Chlorine Dioxide Gas Detector?

Selecting a chlorine dioxide gas detector requires considering several factors of the intended use of the device.

  • What is the measuring range?
  • Are there any other gases in the monitoring area that could skew readings?
  • Has the device been calibrated or will you need to find an organization to calibrate it for you?
  • Will the device be localized to one location or will it move around with users?
  • Does diffusion detection suffice, or is a built in pump and probe required to sample the gas stream?

How is Chlorine Dioxide Gas Used in Sanitization?

Chlorine dioxide gas is frequently used in sanitization and sterilization capacities. Specifically, it is used in healthcare spaces to sterilize medical equipment and laboratory equipment. It can also sterilize rooms and other important spaces and items found in medical settings.

Medical and laboratory equipment, surfaces, spaces, and tools are all sterilized with chlorine dioxide gas. 

Chlorine dioxide may be used to specifically target Legionella bacteria, which may have disastrous impacts on patients who become infected by it.

How is Chlorine Dioxide Gas Used in Disinfection?

Chlorine dioxide can be used as a disinfectant or an oxidant. It's a powerful oxidant that can kill dangerous microbes like fungi, bacteria, and viruses. 

Chlorine dioxide can be readily used as a disinfectant.

What is Abatement?

Abatement typically refers to the reduction of something. In the context of chlorine dioxide, abatement may be used to describe the reduction of a given chemical or compound after exposure to chlorine dioxide gas.

How is Chlorine Dioxide Gas Used in Abatement?

Chlorine dioxide gas has been used for abatement in wastewater in the past. It can be useful in this application because of its ability to reduce micropollutants. Typically, it accomplishes this through its strong oxidizing ability.

Who Uses a Chlorine Dioxide Gas Detector?

Chlorine dioxide gas detectors may be used primarily by employees in certain industries. Such industries may include:

  • Personal car product production
  • Oil
  • Gas
  • Food
  • Beverage
  • Municipal

The average person not working in these industries will likely not come into contact with potentially dangerous levels of chlorine dioxide gas and thus would not need to use a chloride dioxide gas detector.

How is Chlorine Dioxide Gas Generated?

Chlorine dioxide gas is typically generated by purposeful actions. It is not found naturally, so must be produced through chemical reactions. 

Specifically, chlorine dioxide gas can be generated when hydrochloric acid or chlorine is reacted with sodium chlorite.

ClO2 generators can be found here.

Is Chlorine Dioxide Gas Flammable?

Yes.

In fact, it is considered extremely flammable and can cause both fires and explosions if it is allowed to react with certain chemicals. Because of this, it is imperative that it is treated with caution and is continually monitored to evaluate how much is in the area at a given time.

How Do You Use a Chlorine Dioxide Gas Detector?

Chlorine dioxide gas detectors can be found in fixed and portable forms. After the correct device has been purchased (based on whether the device will need to move around or stay in one location), it is imperative that it is calibrated. Further, users must be sure to continually check the power supply and ensure that it is still functioning properly.

Can You Detect Chlorine Dioxide Gas By Smell?

Yes.

Chlorine dioxide can be detected by smell as it does have a strong odor. Its odor threshold is 0.1-0.3 ppm. Yet, the human nose is not capable of accurately determining the concentration of chlorine dioxide gas present, so a chlorine dioxide gas detector is necessary for effective monitoring.

How Is Chlorine Dioxide Gas Stored?

Chloride dioxide gas is typically not sored, but its liquid form is.

Chlorine dioxide is best stored as a liquid at 4 degrees Celsius. It cannot be stored for long because it will dissociate. It is typically not stored as a gas because it can be explosive under pressure.

What is the Biggest Use for Chlorine Dioxide Gas?

Chloride dioxide gas is best known for its antimicrobial uses. Among these include disinfecting drinking water. This use may be most clearly seen within the municipal industry.

What Makes Up a Chlorine Dioxide Gas Detector?

Like most detectors, a chlorine dioxide gas detector is composed of several key parts.

  • The sensor: the sensor is critical to detecting the presence of the chlorine dioxide gas in the first place
  • The output: after the sensor recognizes the presence of the chlorine dioxide gas, it pushes that information to a different component that converts that concentration to a reading interpretable by people
  • The energy supply: the energy supply allows the device to continue working. This can vary depending on if the detector is portable or fixed

Is Chlorine Dioxide Gas the Same as Chlorine Gas?

No.

Chlorine dioxide gas is typically dictated by ClO2 while chlorine gas is typically dictated by Cl2. Since their chemical compositions are different, they have different properties as well, although both are effective oxidizing agents.

Final Words

  • Chlorine dioxide gas can be used in numerous industrial applications for disinfection and sterilization
  • Chlorine dioxide gas can pose a threat to the people working with it, so it should be continually monitored
  • Chlorine dioxide gas is highly reactive and must be kept away from compounds that it could react with
  • Chlorine dioxide gas detectors can accurately detect chlorine dioxide gas and may be fixed or portable
  • Chlorine dioxide gas detectors can reduce the risk of fire or explosion caused by chlorine dioxide gas by alerting the user when the concentration of chlorine dioxide gas grows too high
  • Chlorine dioxide gas detectors can be readily purchased online by gas detection retailers, where these same retailers may also offer calibration services

About the Author

Dr. Koz is the President of FORENSICS DETECTORS, where the company operates from the scenic Palos Verdes Peninsula in Los Angeles, California. He is a subject matter expert on gas sensor technology, gas detectors, gas meters, and gas analyzers. He has been designing, building, manufacturing, and testing toxic gas detection systems for over 20 years.

gas detector expert

Every day is a blessing for Dr. Koz. He loves to help customers solve their unique problems. Dr. Koz also loves spending time with his wife and his three children going to the beach, grilling burgers, and having a cold beer. 

Read more about Forensics Detectors here.

Email:  drkoz@forensicsdetectors.com
Phone: +1 424-341-3886


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