chitosan

micromer® particles are available with covalently bound chitosan in the size range of 1 µm to 12 µm. Chitosan is a linear polysaccharide composed of randomly distributed β-(1-4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). Therefore the chitosan coated polystyrene particles already contain natural amino groups and show special affinities to target surfaces.
The particles are supplied in water without any surfactants.