Why Did Nickel Agarose Beads Lose Their Color?
The blue color of nickel agarose beads arises from coordination between Ni²⁺ and immobilized ligands (e.g., NTA/IDA/TED-type chelators). When loading His-tagged proteins, the local coordination environment changes and the color often becomes temporarily lighter; if strong chelators such as EDTA ...
危险品化学品经营许可证（带存储）