diatomaceous earth

[Duncan Clark]

Historians believe that in newspost 
<Pine.SGI.4.33.0206122203400.4700136-100000 at mole.bio.cam.ac.uk> on Wed, 
12 Jun 2002, Michael Witty <mw132 at mole.bio.cam.ac.uk> penned the 
following literary masterpiece:
>If this diatomaceous earth can be dug out of the ground,
>cleaned up and used for anion exchage of DNA,

It's hydrophobic interaction not ion-exchange. Binds DNA in high salt, 
elute with water.

Pharmacia sepharose etc. may be 'expensive' but given that it can be 
re-used 50x or more by CIP then it's not really so bad.

Duncan
-- 
I love deadlines. I especially like the whooshing noise they make as
they go flying by.

Duncan Clark
GeneSys Ltd.