Asbestos testing lab sample collection & mailing procedure:
How should you collect a material sample to send to an asbestos testing laboratory?
When you have an asbestos sample, where should you send it.
This article includes asbestos sample collection procedures and photographs, sample preparation for submission to an appropriate asbestos testing or forensic laboratory to identify asbestos materials (or probable-asbestos) in flooring and floor tiles, insulation, or other products and materials suspected of containing asbestos.
We provide a link to our article giving access to asbestos test labs.
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Beginning with an example response to a reader's question, we describe asbestos testing: how to collect a sample of asbestos-suspect material and how to send that sample to an asbestos test lab.
We have a large amount of insulation and a few other materials in our home that we suspect are or contain asbestos and would like to know the proper way to collect a sample to send to an asbestos testing lab. - Anon. 5/30/12
In some cases, such as where you may be facing a large or costly cleanup, tests to confirm that asbestos-suspect material really is asbestos-containing are appropriate.
An example is certain floor tiles that need to be demolished, of an age and pattern that may or may not be asbestos-containing. Below we have adapted, expanded, and commented on the advice below from the U.S. EPA's Asbestos in the Home[10]
You can't tell whether a material contains asbestos simply by looking at it, unless it is labeled. If in doubt, treat the material as if it contains asbestos ["Presumed Asbestos Containing Material - PACM] or have it sampled and analyzed by a qualified professional.
A professional should take samples for analysis, since a professional knows what to look for, and because there may be an increased health risk if fibers are released. In fact, if done incorrectly, sampling can be more hazardous than leaving the material alone. Taking samples yourself is not recommended.
If you nevertheless choose to take the samples yourself, take care not to release asbestos fibers into the air or onto yourself. Material that is in good condition and will not be disturbed (by remodeling, for example) should be left alone.
Only material that is damaged or will be disturbed should be sampled. Anyone who samples asbestos-containing materials should have as much information as possible on the handling of asbestos before sampling, and at a minimum, should observe the following procedures:
Obtain a piece of asbestos-suspect material: carefully cut a piece from the entire depth of the material using, for example, a small knife, corer, or other sharp object. Place the small piece into a clean container (for example, a 35 mm film canister, small glass or plastic vial, or high quality resealable plastic bag).
Watch out: while this is good asbestos test sample preparation advice for products such as asbestos paper duct wrap or possibly pipe insulation, at least for some materials such as flooring, in our OPINION this EPA step is incorrect in that it recommends using a knife or corer to cut the asbestos-suspect test sample for lab submission for two reaons:
In the lab, following Walter McCrone's procedure for teasing out asbestos particles from solid materials such as this floor tile, we broke a small corner off for further examination by microscope.
Tiles are broken, not cut, in order to expose asbestos fibers for removal, slide preparation, and microscopic examination using transmitted, reflected, and primarily polarized-light central stop diffusion microscopy.
At ASBESTOS FLOOR TILE LAB PROCEDURES we describe how a sample of flooring is prepared for laboratory analysis for asbestos using McCrone's recommendations.
- Adapted, excerpted and expanded from asbestos testing advice from the U.S. Environmental Protection Agency [10]
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