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Indoor formaldehyde content is how much is normal range?

Update Date: August 9, 2019 16:58 Views: 185
According to the national "code for indoor environmental pollution control of civil buildings", indoor formaldehyde content < = 0.08mg/m3 is considered normal and will not cause harm to human body.

 Atmospheric sampler
 
Under certain conditions, we should emphasize the formaldehyde content in the laboratory. This specific condition is to close indoor doors and windows for more than 24 hours. If the closing time is not enough, the test results may be inaccurate. In fact, the indoor formaldehyde content is greater than 0.08mg/m3.
 
There is also need to have professional testing equipment and testing personnel for professional indoor formaldehyde detection, some users use online purchased formaldehyde detection box or several hundred yuan hand-held formaldehyde detector for indoor formaldehyde detection, these detection products can not be said to have no effect, but the detection accuracy certainly can not reach the detection accuracy of professional equipment and professional laboratory.
 
Scientific indoor air quality detection, not only detection of formaldehyde, usually will detect: formaldehyde, benzene series, TVOC and other harmful substances. Professional formaldehyde detection is usually divided into the following steps.
 
First, inform users in advance that the doors and windows should be closed for 24 hours. During this period, do not use gas stoves and articles with pungent odor, such as cosmetics;
 
Second: the inspector carries the air detection instrument to the user's home for gas collection. According to the indoor area, several sampling points are determined.
 
Third, take the gas samples back to the laboratory, and have professional testing equipment for testing;
 
Fourth: to issue CMA test report for users, CMA test report can only be issued by testing institutions with CMA qualification, and has the effect of judicial appraisal.
 
In order to consider the health of users, it is suggested that users entrust CMA qualified testing institutions to test indoor air quality, so as to ensure the real and effective test results.
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