A device for purification of blood, blood substitutes or solutions for the introduction into the human and/or animal blood circulation and for gas exchange in blood, blood substitutes or solutions for the introduction into the human and/or animal blood circulation, includes at least one gas permeable membrane and a carrier, coated with substances for adsorptive removal of toxins of biological and chemical synthetic origin, their metabolites and degradation products present in blood, blood substitutes or solutions for the introduction into the human and/or animal blood circulation, a use of the aforementioned device and a process for gentle and simultaneous removal of toxins of biological and chemical synthetic origin, their metabolites and degradation products present in blood, blood substitutes or solutions for the introduction into the human and/or animal blood circulation and for enrichment of blood, blood substitutes or solutions for the introduction into the human and/or animal blood circulation with oxygen.