Laboratory Services

Phase Contrast Microscopy

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. The PCM laboratory is a successful participant in the Proficiency Analytical Testing program and all analysts are enrolled in the Asbestos Analyst Registry.

Polarized Light Microscopy

Polarized light microscopy (PLM) is used to determine asbestos fiber concentrations in bulk building materials. PLM is applicable to the analysis of building survey submissions and other bulk materials. WEC participates in The National Voluntary Laboratory Accreditation Program.

* Honolulu, Hawaii - NVLAP Lab Code 200350-0

* Anchorage, Alaska - NVLAP Lab Code 200124-0

Particle Identification Services

Particle identification and trace particle analysis projects are performed on an unlimited variety of materials. Particle identification is useful for the comparison of specific particles, determination of sources of particles, percent of respirable particles, product evaluations and forensic investigations. Particles can be sized and characterized by elemental composition and the distribution of sizes documented.

Gravimetry

Gravimetry, which quantitatively removes organic and acid soluble binder components (typically found in building materials) by ashing or acid-washing samples, is an ideal preparation technique when low level asbestos concentrations need to be determined. Once the gravimetric weight loss is established, the sample residue can be analyzed by PLM (point counting recommended) or Transmission Electron Microscopy.

Flame Atomic Absorption

Flame Atomic Absorption Spectroscopy (AA) is used to accurately determine concentrations of specific elements in a variety of substrates, such as lead concentrations in paint, air or soil. AA Analysis for environmental lead is conducted for air quality testing by NIOSH method 7082, and by EPA method SW 846-6010/7420 for bulk materials. The lead laboratory is an active participant in the AIHA ELPAT proficiency testing program.