ASBESTOS

MEDIA - WATER

Transmission Electron Microscopy (TEM)

Drinking Water by EPA 100.1/100.2
EPA 100.1 and its successor, EPA 100.2 are TEM methods for the determination of the presence and quantitation of asbestos structures in drinking water samples. EPA 100.1/100.2 allows for the quantitation of asbestos structures >10 µm in length. Results are expressed in millions of fibers >10 µm per liter (MFL). An analytical sensitivity of at least 0.2 MFL is required.

Waste Water by EPA 100.1/100.2
The same methodology is utilized for the analysis of waste water samples. The difference results in sensitivities exceeding the 0.2 MFL required by the method. This decrease in sensitivity is typically due to excessive levels of debris or turbidity in the samples. These samples also typically require additional prepping procedures to achieve a “readable” result.