The present invention provides a process for the isolation of one or more proteins) from a protein solution. The process comprising the steps of: a) providing a protein solution comprising one or more specific proteins) and having a preset pH and a preset ionic strength or conductivity, b) applying the protein solution to a packed bed or expanded bed column comprising an adsorbent, and c) obtaining one or more proteins) from the column; wherein the protein solution has been supplemented with an alcohol.