5 Ultra-pure, medical grade chitosan reagents and preparations sold as an integral component of medical and healthcare applications for hemostasis, flocculants, dressings/bandages, gene delivery, drug delivery, peptide delivery, tissue and cell scaffold, topical antimicrobials, internalantimicrobials, internal human body applications, internal animal body applications, films, coatings, fibers and precursor reagents and preparations for customized chemical modification, namely, chemical derivatives based on modification at the amine or hydroxide reactive groups; ultra-pure, medical grade chitosan reagents and preparations for medical and healthcare applications, sold as an integral component of medical and dental apparatus, namely, medicated oral rinses, hand sanitizers, gauze sprays, namely, disinfecting or sterilizing, and dental plugs, namely, wound dressings for dental surgery; sterile cloth, surgical dressings, namely, hemostatic wound and bum dressings