Preparation of the Exchange Medium

The purpose of precycling an exchanger is to expose the charged groups that are bound to the matrix. The cellulosic exchangers are discussed here because precycling is most critical to these media. How- 

Fignre 4-6. The effects of precycling an ion exchange resin on its resolution capabilities. (Copyright W. and R. Balston, Ltd., Maidstone, Kent, England.) 

The final operation in the preparation of an ion exchanger is equilibration of the exchanger with the appropriate counterions. The actual 

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