Complex sentence: For this reason, when using CAFM, tip conductivity characterization (using a reference sample) before and after the experiments is highly recommended; only if the CAFM tip holds the same conductivity before and after the expeiments, the data collected are trustable.
Split into simpler sentences: For this reason, when using CAFM, tip conductivity characterization (using a reference sample) before and after the experiments is highly recommended. Only if the CAFM tip holds the same conductivity before and after the expeiments, the data collected are trustable.