The DeLisle laboratory is located in Portage, Michigan. It was established in 1985, and has strived to meet and exceed our client's expectations. DeLisle asbestos bulk sample analysts are trained by the McCrone Research Institute and have over 24 years of experience in the analysis of asbestos bulk samples.

DeLisle participates in an external Round Robin AIHA Proficiency Analytical Testing (PAT) program for analysis for airborne fiber samples.

All of our Phase Contrast Microscopy analysts have successfully completed a NIOSH-582 equivalency course to analyze air samples.  All analysts participate in an inter-laboratory and external round robin samples exchange program for quality assurance.

DeLisle's laboratory can perform a variety of analysis from;

  • Asbestos in Building Materials
  • Asbestos Fiber in Air
  • Asbestos Fiber in Water
  • Asbestos Fiber in Soil
  • Fine Particle/Fiber Analysis
  • Surface Failure
  • Nuisance Particulate


Phase contrast microscopy (PCM) is used to determine fiber concentrations in air. All asbestos analyses are performed in strict compliance with the NIOSH 7400 Method, counting rules A. DeLisle's PCM laboratory participates in the AIHA Proficiency Analytical Testing program.


Polarized Light Microscopy (PLM) is an optical microscopic technique that enables the testing and identification of minerals and materials including asbestos by determining the various optical properties of the particles being examined. Asbestos minerals can unequivocally be identified through the use of this type of microscopic analysis by a highly trained analyst.

EPA / 600 / R-93 / 116 EPA Test Method: Method for the Determination of Asbestos in Bulk Building Materials.





When dropping off or sending suspect asbestos bulk samples to our lab please make sure that:

  • Each sample is secured in its own individual, air tight, seal-proof plastic bag (zip lock)
  • Chain-of-Custody is filled out legibly with all information (download form above)
  • All samples are labeled correctly and according to the Chain-of-Custody
  • Do not staple or tape the Chain-of-Custody to the sample bag

DeLisle Associates LTD Kalamazoo, Michigan 269-373-4500
All rights reserved Copyright 2009