Microscopy

The microscopy section of the laboratory performs polarized light microscopy (PLM), phase contrast microscopy (PCM), and transmission electron microscopy (TEM) analyses using current NIOSH, EPA and ELAP analytical methods.

 

Bulk building materials, soils and dust samples are analyzed for asbestos by PLM.  If necessary, the asbestos percentage in low concentration or problematic samples can be confirmed using point counts, gravimetric reduction or TEM analysis.  The PLM laboratory also has the ability to perform general dust characterizations and ceramic fiber analysis.

 

Air filter samples are analyzed for fiber concentration using phase contrast microscopy.

 

In the transmission electron microscopy laboratory, bulk, air filter, surface wipes, microvacs and water samples are analyzed using a Philips CM-12 TEM with electron micrograph, energy dispersive X-ray analysis (EDXA) with on-screen measurement capabilities.  This instrument allows immediate and accurate characterization of material containing specific asbestos mineral species or as non-asbestos fibrous matter.

 

In addition to asbestos analysis using government published methods, DataChem Laboratories has developed sample preparation and analytical procedures for characterization of samples with non-standard requirements.

 

The Microscopy Section Manager is:  Anna Ristich

 

The Laboratory Radiation Safety Officer is:  Jaime Carrier