How much formaldehyde concentration can I stay in the new house with confidence? According to different occasions and different people, the measurement standard of formaldehyde pollution is different:

1, indoor air quality standard (GB/T 1883—2002): formaldehyde ≤0. 10, benzene ≤ 0.1,TVOC≤0.60.

2. Code for Indoor Environmental Pollution Control of Civil Building Engineering (GB 50325—2001(version 2010));

Class I civil construction projects (residential buildings, hospitals, old buildings, kindergartens, school classrooms and other civil construction projects): formaldehyde ≤0.08, benzene ≤0.09, TVOC≤0.50.

Class II civil construction projects (office buildings, shops, hotels, cultural and entertainment places, bookstores, libraries, gymnasiums, public transport waiting rooms, barbershops and other civil construction projects): formaldehyde ≤0. 10, benzene ≤0.09, TVOC≤0.60.

It should be noted here that children's resistance is weak. When the concentration reaches 0.06-0.07 mg/m3 of air, children will have mild asthma. Therefore, it is safer to control indoor formaldehyde within 0.05/m3.