The invention relates to a method for linking nucleic acid and/or glycosaminoglycan
or glycosaminoglycan mimetics to a polar/hydrophilic material, characterized by
contacting a nucleic acid and/or glycosaminoglycan and a polar/hydrophilic material
with each other in the presence of a solution being 20 to 100 percent saturated
with a non-chaotropic salt and removing said solution from the nucleic acid and/or
glycosaminoglycan-polar/hydrophilic material.