Table 12 Indoor air quality standards
From: Building an indoor air quality monitoring system based on the architecture of the Internet of Things
Items | Critical concentration |
|---|---|
Indoor Air Quality (IAQ) | |
Carbon dioxide (CO2) | 1000Â ppm |
Carbon monoxide (CO) | 9Â ppm |
Formaldehyde (HCHO) | 0.08Â ppm |
Total volatile organic compound (TVOC) | 0.56Â ppm |
Bacteria | 1500Â CFU/m3 (bacterial counts/cubic meter) |
PM2.5 | 35 μg/m3 |