High-Precision Asbestos Analysis. NVLAP-Accredited. Accurate Clearance Testing for Safer Re-Occupancy
Asbestos contamination poses significant risks in educational, commercial, and public buildings. Under the Asbestos Hazard Emergency Response Act (AHERA), Transmission Electron Microscopy (TEM) is the standard method for post-abatement clearance of air samples, especially in schools and other high-sensitivity environments.
SGS provides fully accredited, high-throughput TEM AHERA testing services designed to support regulatory compliance, project timelines, and occupant safety.
Why Choose SGS for AHERA TEM Analysis?
- EPA-Accredited Methods: We analyze airborne asbestos samples using TEM in accordance with the AHERA method.
- Comprehensive Fiber Analysis: Identifies asbestos structures ≥ 0.5 µm in length, with at least 5:1 aspect ratio, confirming crystalline structure via electron diffraction and elemental analysis.
- Matrix Interference Handling: Our skilled analysts isolate asbestos even in complex matrices with high background dust, including school buildings and construction/demolition sites.
Our TEM Capabilities Extend Beyond AHERA
SGS’s expertise in Transmission Electron Microscopy covers a wide range of sample types and standard methods, enabling comprehensive asbestos and nanoparticle analysis to meet diverse client needs:
- Air Samples: AHERA, NIOSH Method 7402, ISO 10312
- Surface Dust Samples: ASTM D5755, ASTM D6480
- Bulk Samples: ELAP 198.4 / Chatfield Method
- Water Samples: EPA Method 100.2
- Cosmetics & Talc Products: FDA Proposed Rule (21 CFR Part 730)
- Nanoparticles: Carbon nanotubes and other engineered nanomaterials
This broad scope allows SGS to provide precise and reliable analysis for environmental monitoring, occupational health, product safety, and regulatory compliance.
Analytical Details
- Methodology: TEM analysis per AHERA guidelines with detailed reporting of structure counts, asbestos types, and non-asbestos structures.
- Quantification: Results expressed as structures per square millimeter (s/mm²) and structures per cubic centimeter (s/cc).
- Detection Limits: Achieves sensitivity down to <0.005 s/cc using standard preparation and analysis protocols.
Regulatory Applications
Our AHERA TEM analysis supports critical applications such as:
- Asbestos management plans in schools and commercial/public buildings
- Clearance air testing post-abatement
- Baseline and risk assessments for renovations or demolitions
- Environmental Site Assessments (ESAs) involving asbestos-containing materials
Fast, Flexible Turnaround for TEM AHERA Testing
At SGS, we understand the urgency of clearance testing especially in schools and public buildings where timelines are tight and occupant safety is critical. That’s why we offer:
- Rapid 4-Hour, Same Day & 24-hour turnaround for TEM AHERA samples at select laboratories
- Weekend and after-hours analysis options available in certain regions to help keep abatement and renovation projects on track
Contact us to discuss your specific needs and timelines.