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WOHL performs fiber counting and bulk asbestos determinations by phase contrast microscopy (PCM) and polarized light microscopy (PLM).

WOHL is accredited by the American Industrial Hygiene Association-Laboratory Accreditation Programs LLC. (AIHA-LAP, LLC) for bulk asbestos identification.

For information on collecting a sample, please see our Home Owners Services Page:

For general information:

For additional information in Wisconsin: