Electron microscopy
  
Gaskets in EMs
- Practical Electron Microscopy and Database -
- An Online Book -
Microanalysis | EM Book                                                                                   http://www.globalsino.com/EM/        

This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
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In general, contamination of aperture surfaces is normally originated from deposition of organic compounds. The contamination sources are:
        i) Vacuum pump oil used in the pumping system.
        ii) Gaskets.
        iii) O-rings used to seal the vacuum system.
        iv) Greases used to lubricate O-rings.
        v) Specimen itself.

 

 
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