"To such end, three teabags of different chemical compositions were used in this study: (1) empty nylon-6 (NY6) teabags (as a model of polyamide), (2) empty pol

"To such end, three teabags of different chemical compositions were used in this study: (1) empty nylon-6 (NY6) teabags (as a model of polyamide), (2) empty polypropylene (PP) teabags, and (3) commercially available teabags containing tea, and cellulose as the polymer composition." The different teabag composition materials were from separate types of teabags, not composition materials of the same teabag.