Ozone (O3) serves as a traditional oxidant and disinfectant in numerous industries, while also finding diverse applications elsewhere. Due to its unique characteristics, it is present in a wide range of industrial facilities. However, given its high toxicity, it becomes crucial to employ an ozone tester whenever possible. Whether you are uncertain about Ozone's presence in your industry or simply curious about its applications, this article covers all aspects. We delve into the significance of ozone monitoring and introduce our advanced solutions to prevent ozone poisoning effectively.

Understanding the Dangers of Ozone Gas

As previously stated, Ozone gas possesses a high level of toxicity. Its strong and pungent odor, coupled with its oxidizing properties, can lead to severe damage to both the respiratory tissues of animals and plant tissues, particularly when concentrations exceed approximately 100 ppb. Consequently, Ozone becomes a significant respiratory hazard and pollutant when found near ground level.
With a Short-Term Exposure Limit (STEL) as low as 0.2 ppm and no Time-Weighted Average (TWA), Ozone poses significant health risks to both personnel and the environment. Such attributes underscore the importance of ozone testers in workplaces to effectively prevent the toxic effects of this gas.

Where Can Ozone Be Found

Ozone (O3) finds applications in a broad spectrum of industries, particularly those requiring an oxidant or disinfectant in their processes. Below are some of the most common industries where Ozone gas is commonly found:


Industrial wastewater, or effluents, can contain numerous contaminants like VOCs, cyanides, and sanitary waste. To eliminate these pollutants, water treatment companies rely on various chemicals, with Ozone being a preferred option. Its effectiveness in breaking down organic and inorganic pollutants and its cost-efficiency make it favorable over chlorine. Consequently, Ozone is widely used and stored in substantial amounts within the industry, necessitating the deployment of fixed or portable ozone testers to ensure safety during water treatment processes.

Medical Industry

Ozone's remarkable disinfectant qualities find diverse applications in hospitals, particularly during the COVID-19 outbreak, to ensure the safety of staff and patients. One common method involves releasing 20ppm concentrations of Ozone gas into rooms using generators, effectively disinfecting all surfaces. Additionally, UV lights are employed to disinfect areas, emitting a small amount of Ozone gas in the process. Consequently, after the disinfection process, the use of portable ozone gas testers becomes crucial to perform spot checks in rooms due to the significant release of ozone.

Pulp and Paper Industry

Apart from its disinfectant properties, Ozone proves to be a highly effective bleaching chemical, rendering bright and stable pulp at a minimal cost, making it a preferred choice in the paper industry. Notably, Ozone presents a more environmentally friendly alternative for pulp bleaching compared to chlorine and other chemicals. Given the stringent regulations concerning effluent in the paper industry, ozone gains a significant advantage. Its high concentrations are employed to achieve the desired brightness of paper pulp, making it widely utilized across paper mills. In such settings, the implementation of an ozone gas monitor becomes crucial to ensure personnel safety and compliance with safety standards.

Automotive Industry

Though unexpected, Ozone gas monitors play a significant role in the automotive sector, as ozone finds extensive use for cleaning and sterilization purposes. Similar to the medical industry, Ozone is released into cars via O3 generators, effectively reaching areas that regular car cleaning methods might miss, including air vents. This practice is widespread in the automotive industry, employed from the car manufacturing process to certain car wash facilities. Due to the substantial concentration of O3 released during these processes, it becomes vital to perform spot checks using an Ozone gas tester, ensuring the safety of personnel and customers in the surrounding area.
The industries mentioned above are just a few examples where ozone testers are essential. Other ozone applications include:

Ozone Testers from Sihon-Ozone

At Sihon-Ozone, you can find ozone testers using the pump suction principle, the UV absorption method and the electrochemical method. These ozone testers use different principles to provide accurate measurement of ozone levels in various ozone-related applications.

Contact Sihon-Ozone

For your ozone gas detection needs or any other gas detection requirement, reach out to the experienced team at Sihon-Ozone. We have extensive expertise in ozone gas detection. We can provide you with a complete solution and provide full support for your ozone gas detection through our team.