Nick: Hi, I use TM because I was lucky to get few for reasonable price from
local bancrupted research company, together with all the accessories. Diff
pump are much cheaper, they need practically no maintenance (when used
right way), but they it takes much longer time to start it up and also the
On Wednesday, 11 February 2015 11:28:07 UTC, Dalibor wrote:
>
> Nick: Hi, I use TM because I was lucky to get few for reasonable price
> from local bancrupted research company, together with all the accessories.
> Diff pump are much cheaper, they need practically no maintenance (when used
> righ
Hi,
TM maintanance is quite expensive (bearings), but it lasts quite long
time. If You want to use polyphenyl ether (Santovac?) You will have to
pay quite a lot of for it. The same with cold trap - liquid nitrogen
on the site necessary (or cooling device).. But as I mentioned, the
oil molecules ar
> Nick: Hi, I use TM because I was lucky to get few for reasonable price from
> local bancrupted research company, together with all the accessories. Diff
> pump are much cheaper, they need practically no maintenance (when used right
> way), but they it takes much longer time to start it up and
None of this seems really necessary - the research I've been doing implies
that 1 micron (10-3 Torr) is enough for a pump-down and that should be
achieved in just a few minutes.
I can see the need, just maybe, for a TM pump if working on an industrial
scale (or if someone gives you one!), but a
