Plasmid Extraction Kits Manufactured by? - Plasmid Extraction Kits Manufacture (Jan/16/2002 )

? is simple, but requires precise answer.

Who in this world manufactures plasmid extraction kits, there should only be 5 companies?

Who makes the proprietory resins for the gravity flow tubes.?

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Moved here

I can't answer to your question precise because there are much more then 5 companies. You can find out some using a search machine.
QIAGEN has the patent on the resin and produces it. Here's a link:
http://www.qiagen.com/literature/qiagennew...98/98112yqi.pdf