Knight:Centrifuge desalting

Overview
Protocols for buffer exchange of protein samples in small volumes. These protocols are based on gel filtration.

Specific protocols

 * 1) Knight:Centrifuge desalting/Sephadex columns
 * 2) *Protocol for self-packed spin columns
 * 3) Knight:Centrifuge desalting/Zeba columns
 * 4) *Protocol for commercially available spin columns