Hi all, I'm looking to buy a two stage vacuum pump. This may not be the best forum, and if some of you know a vacuum related forum then please do share. This will be used in the lab as a roughing pump, or perhaps to back up a turbo molecular or diffusion pump. (and not for HVAC work). I found a recommendation on "The bell Jar"
Does anyone have experience with either of these? Or some other model you like. I'm steering away from the "tradition" lab pumps made by Edwards, Leybold, Alcatel etc. as these all go for more than a kilo buck.
Thanks George H. (posted to SED and RCM)