top of page

The Science behind testing

This is your Services Page. It's a great opportunity to provide information about the services you provide. Double click on the text box to start editing your content and make sure to add all the relevant details you want to share with site visitors.

PLM vs TEM asbestos testing: What's the Difference?

EPA-Recognized Methods for Asbestos Detection, Clearance Testing, and Regulatory Compliance

a2.jpg
a3.jpg

WHAT IS PLM? PLM (Polarized Light Microscopy)

✔ EPA-accepted method for bulk asbestos testing

✔ Identifies asbestos type + estimates percentage

✔ Uses optical properties of fibers under polarized light

 

Best For:

  • Floor tile

  • Popcorn ceilings

  • Pipe insulation

  • Building materials

  • Best method for asbestos testing in building materials and bulk samples

What is TEM?

EPA-Recognized Methods for Asbestos Detection, Clearance Testing, and Regulatory Compliance

oCyFGO5kMP3SeOLBH60fJstYvd7o1DwN_LG5cugnWRBdQtXqSvvBKDQWzFv3zfaj_AlqRudbs4rr1YsmlRiJXhEma6
RP_oeY3nQT5OFWtCcEFXAuAHu0BhPWRXGnWsOF1SC96TXonT5Ilt9qhdpBjw-5Dk4dtFKxWDNdytYONQX4C3s5cL15
V9Q1SJzLReC236uamyquMSs0Uono--krfaHVXUtk-0Fzx98CV_uyfnytop61z-ALSilsDuYbX9X48xgEuEtuKOj0rQ

WHAT IS TEM? (Transmission Electron Microscopy)

✔ Ultra-sensitive asbestos detection method
✔ Identifies microscopic fibers at very low concentrations
✔ Required for clearance testing under AHERA

 

Best For:

  • Air samples

  • Post-remediation clearance

  • Schools & public buildings

  • Low-level contamination detection

“Most accurate asbestos testing method for air quality and clearance verification”

image.png

WHEN TO USE EACH METHOD

PLM IS USED

✔ Inspecting homes before renovation

✔ Testing drywall, tile, insulation

✔ Performing real estate inspections

✔ Required for clearance testing under AHERA

 

TEM IS USED

✔ Verifying asbestos removal
✔ Testing air after abatement
✔ Required by AHERA (schools)
✔ Confirming low-level contamination

REGULATORY AUTHORITY

Federal Regulations That Require These Methods:

bottom of page