Indoor Air Quality Investigations

Carbon dioxide

Measurement of carbon dioxide levels in indoor environments to determine effective ventilation rates and introduction of fresh air into workplace environments.

Products of combustion

Measurement of products of combustion including carbon monoxide, oxides of nitrogen and particulate matter (PM10) that may affect health and productivity of workers.

Volatile organic compounds

Sampling and analysis of a variety of airborne organic compounds from a variety of building components and activities.


Sampling and analysis of various types of airborne particulate matter including nuisance dusts (total and respirable), allergenic wood dusts, silica dusts, mineral dusts, toxic dusts and asbestos.

Temperature and relative humidity

Measurement of these comfort parameters established to create the best conditions for workers. Also indicates the effectiveness of the ventilation system.


Measurement of lighting levels which, if too low or too bright, can cause a number of health effects including headache, fatigue and eye strain.

Mould and bacteria

Sampling and analysis of biological contaminants linked to allergic reactions, upper respiratory effects and a host of non-specific symptoms and other health concerns including nosocomial infections. Materials may be airborne or sampled from growth on surfaces (bulks sampling).