Once air samples have been safely collected by trained 3rd party professionals using approved protocols, these samples are submitted to the lab for analysis.  In the lab, we safely prepare and analyze samples following our in-house method.

We follow the NIOSH 7400 A & B method, with any deviations stated in our method.  Our method is accredited by CALA lab audits, and quality control (QC) is monitored by quarterly checks provided through the IHPAT Industrial Hygiene program.

Using phase contrast microscopy (PCM), the scope of this analysis is to quantify the level of airborne fibres present within a sample area which meet the criteria of the NIOSH 7400 A & B counting rules (see image below).  All fibres are counted that meet the criteria and therefore “asbestos” fibres cannot be distinguished using this method.

Fibre counts and final results are confidentially reported to clients.  We strive to provide the best quality service in a timely manner. 

Our services are limited to laboratory analysis only, and therefore we do not provide consultation with respect to sample collection, analysis results, and/or remediation.


Asbestos is a fibrous material that is sourced from minerals.  It is a respiratory hazard, and exposure to the lungs may lead to chronic incurable diseases such as asbestosis, or carcinogenic mesothelioma.

Although discontinued, asbestos was previously used in a variety of building materials prior to and including late 1970’s into the early 1980’s (view Government of Alberta Infrastructure Technical Bulletin below), and fibres can become airborne if these materials are disturbed during renovations involving these asbestos containing materials.

As well, asbestos fibres do not disintegrate when burned, and can therefore become airborne when a building is destroyed by fire.

Monitoring of air for asbestos and other fibers can be done by sampling air into a PCM cassette.

Fibres are counted using a phase contrast microscope.

Click on the Government of Alberta Infrastructure Technical Bulletin on the left hand side of the page to zoom in and view information about asbestos containing materials found in buildings.

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