In addition, how is this value of 0.20 measured? If it is a hand-held detector or formaldehyde self-test box, it is recommended not to believe it, because both of them have great errors and cannot be used as a reference for determining formaldehyde value.
Recommend three methods to detect formaldehyde:
The best way to determine is to find a professional testing institution with CMA qualification. The test report issued by them is legally binding, relatively authoritative and accurate, but the cost is high, and CMA testing institutions are only responsible for testing, not for governance, that is to say, if you want to in addition to formaldehyde, you have to spend another sum of money on governance;
You can also find a professional management company to detect pollution. Professional management companies also use professional equipment, and the numerical error is very small compared with CMA qualified testing companies. The governance company can also serve as professional testing and professional governance, but the testing report has no legal effect and is only used to determine its own governance effect.
In addition, it is also a method to choose to rent professional equipment for testing. In fact, the steps of formaldehyde detection are not very complicated. If you operate in strict accordance with the standard procedures, you can also operate your own instruments and reagents, but professional equipment is necessary. The cheaper professional equipment costs about 4,000 yuan, not counting the money of reagents, and it is not worth buying. Suggest renting.