EPA LEVEL II

This is a Transmission Electron Microscopy (tem) method that is divided into three levels of  analysis.  Each level of analysis entails an increasing amount of analytical effort.  A level I analysis is for screening large numbers of samples.  A level II analysis is for regulatory action or compliance (this level of analysis is very similar to the ahera protocol).  And a level III analysis is designed for confirmatory analysis of controversial samples.

Level I:

Morphology and visual SAED pattern recognition

Level II:       

Morphology, Visual SAED, elemental analysis

Level III:              

Morphology, visual SAED, some zone axis SAED and elemental analysis

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