I ask this because I had a problem with a FESEM FEI SCIOS system. According to the technician he made observations of my sample TiO2/MAGNETITE. After many observations and session of my samples and others more. The system failed and the conclusion was due to my TiO2/magnetite particles. The engineers of the enterprise mention that is necessary to change all the column of the system. However, I guess is a bad diagnostic. So I would like to know your point of view. I asked some colleagues about this problem and they mention that it could be a misalignment of the mirrors.

What do you think about this problem?

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