1 Glass vials containing sterile water or sterile saline chemical solution for use in for use in laboratory, biotechnology, scientific, and research purposes; sterile water or sterile saline chemical solution for laboratory, biotechnology, scientific, research purposes; chemical preparations, namely silica-based density centrifugation media and chemical solutions consisting of regents for laboratory, biotechnology, scientific, and research purposes; diagnostic preparations for laboratory, biotechnology, scientific, research purposes