A selectively permeable membrane mounted in a centrifuge tube. The buffer containing a protein to be concentrated is forced through the membrane by centrifugation, leaving the protein in the upper chamber.
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2006-03-05 06:38 Kjaergaard 1173×1293× (599674 bytes) Photo taken by [[User:Kjaergaard]]. An ultra filtration device.
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((Information |Description=A selectively permeable membrane mounted in a centrifuge tube. The buffer containing a protein to be concentrated is forced through the membrane by centrifugation, leaving the protein in the upper chamber. |Source=http://en.wiki
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