Sep 5, 2024 · Air monitoring is an essential component of any asbestos abatement project, and final clearance is determined by air sampling. Eurofins Built Environment Testing analyzes air samples by Transmission Electron Microscopy (TEM) and Phase Contrast Microscopy (PCM).

Jun 30, 2005 · While TEM is the best analytical tool to distinguish asbestos fibers from non-asbestos fibers, OSHA believes that PCM provides the best available index of exposure that can be used to assess health risks to workers.

This infographic explains the benefits of SEM against the industry standard technique PCM, and why SEM should be used to provide a true reading.

Nationwide asbestos laboratory analysis of air, water, soil, bulk, wipe, and dust samples by TEM, PLM, PCM, SEM methods, including NIOSH 7400, NIOSH 7402, EPA 600/R/93/116, ASTM, and AHERA.

EMSLs asbestos laboratory services utilize various methodology and instrumentation including Polarized Light Microscopy (PLM), Transmission Electron Microscopy (TEM), Phase Contrast Microscopy (PCM), Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD).

Sep 6, 2024 · PCM (Phase Contrast Microscopy) is a widely used testing method for detecting higher concentrations of asbestos. This approach utilizes an optical microscope to count the fibres on a cassette filter to determine the total fibre concentration.

May 28, 2021 · To effectively test for asbestos, a growing number of labs are turning to scanning electron microscopes with energy dispersive X-ray spectroscopy (SEM-EDS) capabilities as an alternative to PCM and PLM testing.

Comparing to SEM where electrons will reflect on the sample, here electrons will transmit the sample. All electrons will then hit the fluorescent screen enable the image recording system to produce the image you are looking for. 1. The source of illumination.

Paraffin-embedded lung tissue was examined by a laboratory using scanning electron microscopy (SEM) and was reported to contain elevated asbestos body concentrations and five fibers, of which two were asbestos (one chrysotile and one tremolite).

Phase Contrast Microscopy (PCM) is widely used for the analysis of fibers in ambient and outdoor environments. This relatively quick test is useful in determining if the air has an increased number of fibers.