The Large-scale Membrane Preparative Protein Folding Column Set is used for preparative membrane protein folding after the folding condition has been identified by the Spin-column Membrane Protein Folding Screen Kit (Catalog # MFC01-20).  The column number represents the specific folding condition.  Each Column Set includes 4 identical preparative protein folding columns and reagents for folding about 5 -10 mg of urea -solubilized inclusion body proteins.