Hi everyone
We currently use a Starcell 30l on our VG3600 and we had no blank problems
while we pumpe only clean gas. A leaking valve during a week-end a few
years ago changed that strongly and we had to replace the pump. I agree
that these seem to be fairly good as long as they see only clean gaz.
Regarding pumping on the extraction line because I started running with
50-70 mg samples we took the habit of using turbo pump to get rid of the
gaz during extraction steps and also get down in pressure after line
bakings. We switch to a smal 20l STarcell only for overnight pumping when
everything is clean.
Aoother question to you all: where do we stand regarding TA crucibles for
double vacuum furnaces ?
Nick
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Dr Nicolas ARNAUD, PhD UMR 6524 CNRS
Chargé de recherche CNRS Lab. "Magmas et Volcans"
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Fax: (33 0) 473 34 67 44 63000 Clermont-Ferrand France
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