removal of SDS from protein solutions:
equilibrate QAE-sephadex in 50 mM NaPi pH7, 200 mM NaCl.
make a column (in a syringe, pipet,whatever)
load protein solution, elute with 50 mM NaPi pH 7, 200 mM NaCl
protein comes out, SDS stays in the column
Good luck,
Rogier
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