Recently, discussions about ozone issues related to air purifiers have increased. Many people have been asking the question, "How can I know if my air purifier produces ozone?" This is indeed a critical issue. Coincidentally, I looked into this when searching for an air purifier for my child, so I'd like to share the information I compiled at that time. You can use it to identify ozone-related issues yourself.
I. Core Prerequisite: Air purifiers that may cause ozone issues
1. Air purifiers equipped with electrostatic dust collection, plasma, negative ion (excluding small-particle-size negative ions), or ultraviolet (excluding 254nm) technologies may produce ozone during operation.
2. Air purifiers advertised as using ozone technology for disinfection.
II. Methods to Determine if an Air Purifier Produces Ozone
1. Review the test report A relatively simple way to determine is to directly request the ozone test report for the purifier from the seller and confirm the ozone concentration. Except for "0.000," any other readings indicate the presence of ozone. Additionally, pay attention to the following:
① The test report should bear watermarks from authoritative organizations such as CMA, CNAS, and the Health Commission's Disinfection Product Approval Number.
② The machine should undergo at least 12 tests, with the results averaged.
③ "Undetected" does not mean zero ozone.
2. Verify the Health Commission (Disinfection Product Approval Number) filing Check the machine's filing information on the *National Online Filing Information Platform for Disinfection Products* by entering the machine model or brand name. Also, note the following:
① The ozone test report filed with the Health Commission should match the one provided by the seller.
② The filing status with the Health Commission should be "valid."
3. Actual usage experience The strong oxidizing properties of ozone can continuously irritate our respiratory tract and nasal mucosa in daily life. Therefore, be cautious if the following two situations occur:
① After running the air purifier for some time, you notice a smell similar to disinfectant or fishy odor, which may indicate ozone exceeding safe levels.
② After continuous operation for several days, you experience symptoms such as a dry throat, coughing, runny nose, or dizziness, and these symptoms improve after turning off the purifier and ventilating the room. This also warrants caution regarding ozone issues.
You can follow these methods when selecting an air purifier or conducting self-tests. Stay vigilant to avoid potential pitfalls.
