Asbestos Testing Lab

GLE has a fully equipped laboratory in our Tampa office to perform asbestos testing and bulk sample analysis by polarized light microscopy (PLM) and phase contrast microscopy (PCM) air sample analysis for private/public entities. GLE’s asbestos testing lab has been accredited by the National Voluntary Laboratory Program (NVLAP) since 1991. Darryl Neldner, GLE’s Director of Laboratory Services serves as the primary asbestos testing analyst. PCM sample analysis can be performed on-site by our NIOSH-trained and AIHA PAT proficient field personnel.

PLM is the technique most often employed for the analysis of suspect bulk building materials utilizing the unique features of polarized light to observe mineral specific optical properties. PLM can differentiate asbestos from non-asbestos fibers and further classify the various species that compose the asbestos mineral family. Moreover, the technique records the identity of the non-asbestos fibrous component of each bulk building material sample. The PLM procedure provides an economical technique for screening large numbers of samples.

PCM is widely used to measure fiber concentrations of air samples. This is routinely conducted at asbestos abatement sites and can be used for environmental monitoring, personnel monitoring, and clearance testing for minor abatement projects. The PCM technique has the advantage of fast turnaround time and low cost. Transmission Electron Microscopy (TEM) analysis can be employed for all large abatement projects, as needed.

The current revision of the National Institute of Occupational Safety and Health (NIOSH) Method 7400 is employed for this analytical technique. Accreditation is provided for the laboratory through the American Industrial Hygiene Association (AIHA). Extensive Quality Assurance and Quality Control (QA/QC) regimens are performed as part of our ongoing certification program. Proficiency testing for asbestos is primarily conducted through the Proficiency Analytical Testing Program (PAT) administered by AIHA.

GLE's most recent on-site assessment by the National Institute of Standards and Technology had the following to say about GLE’s asbestos testing NVLAP accredited laboratory.

“This (asbestos testing) lab is an excellent operation which is uncommonly highly efficient and productive.”

“It is clear to see that Mr. Neldner (Director of Laboratory Services) is intensively involved in the lab, his role is at its highest performance, and his devotion to the subject. Clearly, a superb model for others.”

“I believe this lab to be in excellent analytical shape.”

“This is one of the best operations I have seen in quite some time.” (Referring to GLE’s asbestos testing laboratory)