FW: Dry MeOH for ESI-MS

Everson, Anita [PRI] (AEverson@prius.jnj.com)
Mon, 23 Aug 1999 16:08:19 -0400

This is old technology, but molecular sieves always worked for me. I think
you can get them from anybody -- Mallinkrodt, Sigma, VWR, etc. They are
little pellets that are just poured into the solvent, then swirled around;
then they just sit on the bottom of the bottle, or you can decant the
solvent off of them. They don't have much capacity, but they are cheap.

Anita Everson
Peptide Lab
RW Johnson PRI, La Jolla, CA

> -----Original Message-----
> From: Gary Valaskovic [SMTP:picotips@hotmail.com]
> Sent: Monday, August 23, 1999 11:38 AM
> To: Recipients of ABRF List
> Subject: Dry MeOH for ESI-MS
>
> ABRFer's
>
> I am looking for a dessicant to remove residual (trace) water from
> methanol.
> Ideally the process needs to be (ESI) LC-MS compatible, that is I do not
> want to add additional background signal. (I need to make the methanol as
>
> dry as possible.) If anyone has some good suggestions/experience on a
> particular choice of dessicant please let me know.
>
> Thanks,
>
> Gary
>
>
>
> _______________________________________________________________
> Get Free Email and Do More On The Web. Visit http://www.msn.com