Asbestos Testing

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PLM Asbestos Testing

Polarized Light Microscopy (PLM) for asbestos in bulk samples:

EPA/600/R-93/116 Method.

Polarized Light Microscopy (PLM ) analysis is performed to identify, classify and quantify Asbestos fiber concentration in bulk building materials, domestic & Industrial insulations, sprayed & non-sprayed plasters, coatings, ceiling & flooring materials, Floor tiles, caulks and adhesives.

Point Count:

This method is used to quantify Asbestos fibers in bulk materials at a lower detection limit using PLM microscope. Point Count provides detection limit of 0.25%. Phase Contrast Microscopy (PCM):

NIOSH 7400 Method.

PCM analysis is performed to measure fiber concentrations in Clearance, Personal and Ambient air samples during and after abatement.

  • Asbestos – Bulk ID (PLM)
  • Asbestos – Fiber Count (PCM)
  • Asbestos – Bulk Point Count
  • Asbestos – Wipe Samples Bulk or PLM
  • Airborne and Bulk Asbestos Analysis

Asbestos / Indoor Air Quality Testing Performed at Our Lab
Utilizing EPA methods, we offer the capability to analyze Asbestos Bulk (PLM) samples, Fiber Count (PCM), Bulk Point Count, and Wipe Samples by PLM.

X-ray diffraction (XRD) analysis is available.
To learn more about the XRD analysis performed at our lab, please contact our Project coordinator.
– mainly mineral identification used for silica in bulk and air samples and materials deposited inside pipes and vessels.

  • Asbestos – Bulk ID (PLM)
  • Asbestos – Fiber Count (PCM)
  • Airborne and Bulk Asbestos Analysis
  • Asbestos – Bulk Point Count
  • Asbestos – Wipe Samples Bulk or PLM

To learn more about the XRD analysis performed at our lab, please contact our Project Managers at 713-453-6090 or info@agtlabs.com.

1. How much sample is needed for bulk PLM analysis?
For most materials, we need 1 to 10 grams of sample. This is roughly a 1-inch by 1-inch square or about 2 teaspoons of loose material.
2. What is required for airborne fiber collection/analysis?
For PCM testing, you need a calibrated pump, a 25mm air monitoring PCM cassette with a 0.8 MCE filter, and a connector to attach the cassette to the pump. Pumps and media are available with advance notice.
3. Why is airborne fiber analysis needed?
It determines the concentration of airborne respirable fibers. PCM testing does not differentiate between asbestos and other fibers like fiberglass or cellulose.
4. What services do we offer for Asbestos?
We have a licensed asbestos and mold consultant on staff that is available for commercial inspections. We DO NOT offer residential inspections.
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