Precaution: Liquid, volatile samples or any substance, which contaminate the chamber of instrument under the vacuum condition, can not be put into the instrument.

1. Dimension of XPS sample
   Typically, the diameter (diagonal) of the sample should be 4~12mm, and its thickness should be <3mm. If your sample is bigger than the above size or irregular in shape, please contact us to handle your sample.
2. Cleaning samples
   The requirement for cleaning SIMS samples can be applied to cleaning XPS samples. The details can be seen in the Section of "how to prepare SIMS sample".
3. Preparing powder samples
   The preparation procedure of the XPS powder sample is similar to that of the SIMS powder sample. Details can be seen in the Section of "how to prepare SIMS sample".