Hi, I am trying to coat my glass master mold with with some releasing agent for PDMS mold. I found from a lof of papers that it is a common practice to treat the substrate using fluorinated tricholosilane vapor in a vacuum desiccator to form a monolayer on the substrate. But I tried with (HEPTADECAFLUORO-1,1,2,2-TETRAHYDRODECYL)TRICHLOROSILANE (C10H4Cl3F17Si ) from Gelest, but even before I started pumping the desiccator the liquid silane on the pippet tip and on the wall of the vial already became some kind of white foam. Consequently the anti-adhesion layer didn't work well. I am aware that the silane may react with the water in the air, but how can I avoid that? Seems people always use it just in a fume hood, not a glovebox. Is there something I am missing? Can you please give me some solution? Suggestion on alternative way for releasing layer is also welcome. Thanks. Maggie