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Asbestos Testing

Category Asbestos Lab Services
Test PLM EPA/600/R-93/116 (200 Point Count)
Description

Method For The Determination Of Asbestos In Bulk Building Materials

EPA 600/R-93/116   July 1993

This is a comprehensive method outlining various techniques for determining the asbestos concentration in bulk building materials.     While predominantly a Polarized Light Microscopy (PLM) method, other techniques such as X-Ray Diffraction (XRD) and Transmission electron microscopy (TEM) are discussed as well.

The PLM method outlines two quantification techniques.  The first, and most widely employed is the visual estimate.  This works well for most sample types.  The second type of quantification technique is the point count.  While more labor intensive it is somewhat less subjective than a visual estimate.  This can be important especially at low asbestos concentrations.  Both the accuracy and precision are improved with point counting.  And the more points analyzed the better the accuracy and precision of the method.

Sample retention time - 60 days

reporting limit to <0.5%


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