Two Different Methods, Three Different Variations, Four Different Sources: What Bulk Asbestos PLM Method Is Your Laboratory Using? Part 1.

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    • Abstract:
      The article discusses the analytical methods, variations, and document sources used in bulk asbestos polarized light microscopy (PLM) methods. It notes that materials as considered to be asbestos-containing materials (ACM) if they have over 1% asbestos. The Toxic Substances Control Act (TSCA) test method requires a multi-step analysis of individual multi-layered sample. Asbestos Hazard Emergency Response Act of 1986 (AHERA) enables visual area estimation.