People usually spend most of the time at homes, offices, and other indoor environments. Every minute we breathe the air could contribute adverse health effects if the quality of air is poor. Check your indoor air quality regularly is the key step to ensure cleanliness of the air.

 

Since the launch of the IAQ Certification Scheme in 2003, the World Health Organization (WHO) has published two IAQ guidelines in 2009 and 2010 respectively on dampness and mould, and selected pollutants (viz. formaldehyde (HCHO), radon, carbon monoxide (CO), nitrogen dioxide (NO2), benzene, naphthalene, polycyclic aromatic hydrocarbons (PAHs), trichloroethylene and tetrachloroethylene). Taking into account local circumstances and the practicability of adopting the latest WHO’s IAQ guidelines, the IAQ objectives of the IAQ Certification Scheme adopted since 2003 (“Old IAQ Objectives”) have been revised for implementation starting from 1 July 2019 (the “New IAQ Objectives“)