Quick facts on some of the contaminants we test for:
PM10 and PM2.5
Fine particles directly emitted from aerosols, power plants, industries, construction activities and automobiles.
CO2
Formed by all metabolic activity and combustion activities. Elevated levels of CO2 indicate an insufficient amount of fresh...
TVOC
Concentration of Total Volatile Organic Compounds (TVOC) is up to ten times higher indoors than outdoors. Main sources are...
Formaldehyde
Formaldehyde (HCHO) is emitted as gas from certain solids or liquids. Concentration of HCHO is consistently higher indoors...
Oxides of Sulphur (SOx)
A non-flammable gas with a penetrating odour that irritates the eyes and nose-lung air passages.
Oxides of Nitrogen (NOx)
A product of combustion, automobile exhaust, tobacco smoke, fossil fuel-fired electricity generating stations and indoor space heaters.
Ozone (O3)
O3 can impair lung function and cause irritation to the respiratory tract. If exposure is high, it can cause irreversible...