规定的方法适用于玻璃片，最好是平的，但如有必要，可弯曲，但来自实验室玻璃器皿。将试样置于盐酸水溶液中，并测定每单位面积提取的碱金属氧化物量，作为耐酸性的测量。规定了仪器、试剂和程序。

The specified method applies to pieces of glass, preferable flat but if necessary curved, but from articles of laboratory glassware. Sample pieces are subjected to an aqueous hydrochloric acid solution, and the amount of alkali metal oxides extracted per unit area is determined as a measure of the acid resistance. Apparatus, reagents, and procedure are specified.