Richardson, N E Proceedings: The interaction of preservatives with polyHEMA. [electronic resource] - The Journal of pharmacy and pharmacology Dec 1975 - 26P p. digital Publication Type: Journal Article ISSN: 0022-3573 Subjects--Topical Terms: Acrylic ResinsBenzalkonium CompoundsChemistry, PharmaceuticalChlorhexidineContact Lenses, HydrophilicPolyethylene GlycolsPolymethacrylic AcidsPreservatives, PharmaceuticalThimerosalTime Factors