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Asbestos Building Materials Identification (PLM Analysis Method)

Polarized Light Microscopy (PLM) is a technique used for the analysis of bulk building materials. This technique utilizes polarized light to observe specific optical properties.  Our PLM analyst will distinguish asbestos from non-asbestos fibers and further classify and quantify the various species that compose the asbestos mineral family. Depending on the analytical results, if asbestos is detected, this would trigger certain regulatory requirements or laws that must be implemented during the handling, work practices and disposal of the material. Additionally, our analyst records the identity of the non-asbestos fibrous component of each bulk building material sample. PLM analysis, including PLM Point Count and PLM Gravimetric, are the most common EPA approved test methods for asbestos identification in bulk materials. 

  • PLM BULK EPA 600 Method
  • PLM Point Count EPA 600 Method
  • PLM Gravimetric & Point Count EPA 600 Method

Asbestos & Fiberglass Air Sampling (PCM Analysis Method)

PCM airborne fiber counting is widely used to meet contractor OSHA requirements, risk assessments, and final air clearances. The method gives an index of airborne fibers and is primarily used for estimating asbestos concentrations; this method may be used for other materials such as fiberglass.

  • PCM NIOSH 7400 Method
  • PCM NIOSH 7400 Method (Rule B)
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