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Ambient air and indoor air quality (IAQ)

Ambient and Indoor Air Quality (IAQ) monitoring

The quality of ambient and indoor air, the air we breathe outside, at home, or at work, can have a significant impact on health. Monitoring of ambient air to ensure no harmful chemicals or particles are present is of paramount importance to ensure public safety and to comply with regulations. Homeowners may also want to have assurance that their indoor air is not having a negative impact on their health.

Some air pollutants are evident by odour or can be visible. However, there are many harmful airborne pollutants that are not easily detectable. For these pollutants, an air quality test is recommended. A handheld instrument or direct-reading equipment may be the first approach to determine what type of air analysis may be appropriate. Based on this information an air quality testing lab can help determine what pollutants may be present and in what concentrations, as well as offer options on the best ways to test air quality for your concerns.

Our laboratories offer a wide range of accredited tests and sampling media. Depending on the target compound, sampling media can be a passive sampler, an active sampler coupled with a pump, or a canister or bottle vac.

Innovative Testing.
Quality Results.

Our chemists will assist clients with tailored monitoring programs and supply sample media for the required monitoring suite. ALS offers analysis, sampling tubes, filters, canisters, and passive samplers for an extensive list of contaminants.

Whether you are a professional occupational hygienist, monitoring an industrial site, responsible for health and safety at work, or a homeowner, our staff will work with you to provide a solution to your needs. We provide complete solutions including analysis, sampling media, pumps and sampling instructions.

Typical target compounds requested by clients include:

Related Topics

Stack gas and CEMS

Sampling and testing of emissions


Vapour intrusion

Subsurface vapour intrusion



ALS has laboratories around the world that specialize in wastewater monitoring