air filters

Alex Kitaygorodskiy (alex@Indigo.clemson.edu)
Wed, 14 Sep 94 16:48:15 -0400

Hi, sorry if you get this message twice (something wrong with our e-mail).
I'd like to ask about air purification system used for NMR.
I realize my question is not original but...
We use here a very good system: boil-off from a very large
liquid nitrogen tank supplies whole Chemistry Department including NMR facilities.
The problem is that the consumption of liquid nitrogen by the department is high
and gets even higher and sometimes we run out of nitrogen and cannot use NMR
instruments for pretty long time (from several hours to couple of days) because
the nitrogen delivery occurs on weekly base. I would like to find an alternative
air supply for NMR and use it in emergency situations. We have line compressed
air which, I suppose, is contaminated with oil and water.
Can anybody recommend me nonexpensive filtering system for house compressed
air which is appropriate for NMR?
I'll appreciate it if you send me detailed information about such systems.
Alex Kitaygorodskiy,
Chemistry Dept.,
Clemson University,
Clemson, SC 29634-1905
alex@indigo.clemson.edu