Disposable filters for buffers etc

Mark W. Trumbore Trumborm at dc37a.nci.nih.gov
Fri Mar 3 16:48:39 EST 1995

In article <newitt-0303951116510001 at>, newitt at ncifcrf.gov
(John A. Newitt) wrote:

> In article <3j5nt4$imn at usenet.INS.CWRU.Edu>, bl275 at cleveland.Freenet.Edu
> (Dan Diaz) wrote:
> > ive been unhappy with the performance of nalgene's disposable filterware,
> > which i use for filter sterilization and for particle removal from hplc and
> > fplc buffers.
> > 
> > more often than not, i find little bits of material in the filtrate which
> > apparently come from the filter itself.
> I've not had any problems with Nalgene nor Corning disposable filterware
> when filtering aqueous buffers.  Now if you are filtering organic
> solvents, e.g. acetonitrile or concentrated methanol, that's another
> problem.  Make sure that the chemical resistance of the filter and housing
> materials are suitable for the solutions you are filtering.  Nalgene and
> many other manufacturers include this info in tables in their catalogs
> that contain filterware.
> John A. Newitt  <newitt at ncifcrf.gov>
> National Institutes of Health
> Bethesda, Maryland  USA

I have also been using both Nalgene and Corning disposable filters for
aqueous HPLC solvents without any problems.  For organic solvents I use
ZAPCAP-CR filters.  They work well and are chemically resistant so there
are no solvent compatibility problems.

Mark W. Trumbore
National Institutes of Health

Mark W. Trumbore
National Institutes of Health
National Cancer Institute
Building 37, Room B109
Bethesda, MD 20892
Phone: (301)496-6682
Fax:   (301)402-0213
Email: Trumborm at dc37a.nci.nih.gov

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