Ang.: Re: desalting

anders_rh01358_johnsen@rh.dk
Mon, 08 Feb 1999 10:16:57 +0100

Dear Kim,
Our initial trials with the ZipTip's worked fine. They are easy to=20
use, even if less than one minute is much exagerated. However, they=20
are not cheap.
regards
Anders
=20
***********************************
Anders H. Johnsen
Chief Biochemist, Dr. Sc.
Department of Clinical Biochemistry
The National University Hospital
KB3014, Rigshospitalet
Blegdamsvej 9
DK-2100 Copenhagen, DENMARK
=20
phone: (+45) 3545 3007
fax: (+45) 3545 4640
e-mail: johnsen@rh.dk
***********************************
=20
=20

_______________________________replyseparator ___________________________=
_______
Emne: Re: desalting
Forfatter: kimber@nnbt.com p=E5 INTRANOTES
Dato: 05-02-99 18:19

=20
=20
=20
=20
=20
I haven't tried them. But I just got an ad from Millipore abou=
t a=20
ZipTip Pipette Tip. Here's the ad: Concentrate,desalt and fract=
ionate=20
from 1-100ul in less than one minute. Pipette tip with 0.6ul o=
f C18=20
resin.
=20
Any one tried these yet?
=20
-Kim Brown
Novo Nordisk Biotech, Inc.
kimber@nnbt.com
www.nnbt.com
=20
=20
______________________________ Reply Separator=20
_________________________________ Subject: desalting
Author: novick@immunex.com at internet=20
Date: 2/4/99 7:48 PM
=20
=20
=20
=20
=20
=20
Hi All,
I am reducing and alkylating proteins in a guanidine solution a=
nd then=20
buffer exchanging using the BioRad P6 centrifuge columns. Our g=
roup is=20
looking for a faster, easier way to clean the sample (we can ha=
ve many=20
samples to desalt at a time). RP desalting doesn't work (protei=
n=20
precipitates and the protocol is WAY too long). I'm interested =
in some=20
kind of desalting pipet that will make this a none-issue for th=
e QC=20
and Formulations folk. Are there any suggestions? The final sol=
ution=20
should be in a neutral, enzyme-friendly, somewhat buffered solu=
tion.=20
Thanks in advance for your help,
Shawn Novick
=20
=20