1.1 ,These test methods cover the quantitative chemical analysis of soda-lime and borosilicate glass compositions for both referee and routine analysis. This would be for the usual constituents present in glasses of the following types: (1) soda-lime silicate glass, (2) soda-lime fluoride opal glass, and (3) borosilicate glass. The following common oxides, when present in concentrations greater than indicated, are known to interfere with some of the determinations in this method: 2 ,% barium oxide (BaO), 0.2 ,% phosphorous pentoxide (P₂O₅), 0.05 ,% zinc oxide (ZnO), 0.05 ,% antimony oxide (Sb₂O₃), 0.05 ,% lead oxide (PbO).