Dear Ivan: Thank you for your advice. I will try to use the them. On Mon, 27 Sep 2010 01:23:53 +0800, Ivan Baturinwrote: > Hello, Jack! > > I have seen the recommendations to use a small drop of turbomolecular > vacuum pump oil for fixing the samples to table and additionally provide > better thermal contact. > TMP pump oil has low vapor pressure and should not give any significant > deterioration of vacuum. > > Regards, > Ivan S. Baturin -- BR. Dept. of EEE., CYC712, University of Hong Kong.