title: Glass and rubber closure effects on the pH of water I. A preliminary investigation.
mesh_terms: D004349:Drug Packaging / Q000592:standards*; D020724:Elastomers; D005898:Glass; D006863:Hydrogen-Ion Concentration; D012408:Rubber; D014867:Water
chemical_list: D020724:Elastomers; D014867:Water; D012408:Rubber; C017098:butyl rubber