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I think this should be rewritten without the emphasis on DNA purification, since it can be used to purify RNA as well Richard☺Decal (talk) 07:30, 23 March 2011 (UTC)
This article is not focused. It meanders around the theoretical background without showing how this background services the topic. — Preceding unsigned comment added by Polariseke (talk • contribs) 12:06, 13 May 2015 (UTC)