In particular, the method comprises the step of using of a depth filtration prior to an ion-exchange chromatography.

The invention relates to the purification of biological macromolecules from biological feedstocks by means of ion exchange chromatography.

Then the collected DNA is subjected to gel filtration chromatography and ion exchange chromatography to thereby purify the environmental sample-origin DNA.

Provided are methods of using ion exchange based chromatography to control the levels of high mannose glycoforms in a glycoprotein sample, such as an antibody sample.

More advacned methods of ion-exchange chromatography have since been developed which employ low temperature/acids so as to prevent denaturation.

The present invention relates to a purification process of (Aib8,35)GLP-1(7-36)NH2 comprising an ion-exchange chromatography purification step and a reversed phase HPLC purification step.

Ion-exchange chromatography is a commonly used process to manufacture whey protein isolate, which contains a high level of protein, i.e. >90%.

In particular, the method comprises the step of using of a depth filtration prior to an ion-exchange chromatography.

The invention relates to the purification of biological macromolecules from biological feedstocks by means of ion exchange chromatography.

An electrochemical ion exchange cell comprises a metal carbollide as ion exchange material.

Ion exchange is executed through an ion exchange membrane.

In one embodiment the anion exchange chromatography material is a membrane anion exchange chromatography material.

Then the collected DNA is subjected to gel filtration chromatography and ion exchange chromatography to thereby purify the environmental sample-origin DNA.

The aforementioned ion-exchange resin comprises an anion-exchange resin.

double treatment on ion exchange resin