The national standard "Indoor Air Quality Standard" GB T 18883-2022 requires that formaldehyde in indoor air is 008 mg cubic meters. The detection conditions are that the doors and windows are closed for more than 12 hours and the furniture is in a state of daily use (doors and drawers are closed).
That is to say, if the wardrobe usually closes the cabinet door, the formaldehyde detection should also be in the closed state of the cabinet door. This is because people sleep with their windows closed at night and open their windows for ventilation during the day, and their living habits are like this. In winter, the windows are closed even during the day, the ventilation time is very short, and the formaldehyde concentration in the indoor air detected after 12 hours of closing the doors and windows does not exceed 008 milligrams of cubic meters, which can ensure the safety of air quality in home life.
GB T 18883-2022 is a recommended national standard, with higher standards, higher safety, and suitable for residential living. After the renovation of a new house, this standard is generally adopted before moving in.
In addition, the national standard "Standard for Indoor Environmental Pollution Control of Civil Construction Projects" GB 50325-2020 requires the formaldehyde of similar buildings (residences, apartments, wards, classrooms, dormitories, etc.) to be 007 mg cubic meters. The testing condition of this standard is to close the doors and windows for 1 hour, which belongs to the standard of housing construction stage and decoration acceptance, and is generally considered to be applicable to the pre-delivery acceptance of real estate developers and the delivery and acceptance of decoration companies.
To detect formaldehyde in indoor air, you can rent a relatively professional testing instrument for testing, or invite a professional testing unit to come to the door for testing and sampling analysis, or you can choose a simpler and more practical formaldehyde detection box for self-service testing.
Formaldehyde detection in the air is a basic test, which can tell us whether the formaldehyde in the new house meets the standard of safe occupancy. However, this detection does not find the source of formaldehyde release, and the degree of pollution of the formaldehyde release source is not known. Therefore, it is recommended to carry out formaldehyde detection in furniture at the same time.
To detect the formaldehyde concentration in the space of furniture, you need to use a formaldehyde detection box, as long as you operate in accordance with the instructions and specifications, anyone can do it, which is simple and convenient. Detect the formaldehyde of each piece of furniture, and then compare and analyze the formaldehyde concentration in the air and the formaldehyde concentration of each piece of furniture, so as to find out the main source of formaldehyde in the new house and comprehensively judge the formaldehyde pollution of the new house.