"> Enviro Labs Limited | Environmental Testing - Indoor Air Quality (IAQ)
Enviro Labs Limited | Environmental Testing - Indoor Air Quality (IAQ)
Indoor Air Quality (IAQ)
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              Environmental Testing Services

Indoor Air Quality Test

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.

Walkthrough Inspection

Our competent examiner can conduct a walkthrough inspection of premises/building to check if there are any  IAQ problems, including odour, ventilation system, exhaust air flow system and unsanitary mechanical room, or trash / stored chemicals in mechanical room, etc. Remedial assessment is also carried out to ensure the IAQ meet the standards.

IAQ Assessment

IAQ objectives for offices & public places

Parameter Unit 8-hour average
Excellent Class Good Class
Room Temperature °C 20 to <25.5 < 25.5
Relative Humidity % 40 to <70 < 70
Air movement m/s < 0.2 < 0.3
Carbon Dioxide (CO2) ppmv < 800 < 1,000
Carbon Monoxide (CO) μg/m3 < 2,000 < 10,000
ppmv < 1.7 < 8.7
Respirable Suspended Particulates (PM10) μg/m3 < 20 < 180
Nitrogen Dioxide (NO2) μg/m3 < 40 < 150
ppbv < 21 < 80
Ozone (O3) μg/m3 < 50 < 120
ppbv < 25 < 61
Formaldehyde (HCHO) μg/m3 < 30 < 100
ppbv < 24 < 81
Total Volatile Organic Compounds (TVOC) μg/m3 < 200 < 600
ppbv < 87 < 261
Radon (Rn) Bq/m3 < 150 < 200
Airborne Bacteria cfu/m3 < 500 < 1,000

IAQ Certification

To improve the indoor air quality (IAQ) and promote public awareness of the importance of IAQ, the HKSAR Government has implemented an IAQ Management Programme. A core element of the Programme is to launch a voluntary IAQ Certification Scheme for Offices and Public Places. For details, please refer to web-site of IAQ Information Centre.