The Chemical Analysis of a Soda-Lime-Silica-Magnesia Glass

JSGT 1950 V34 T257-T272

 Two of these glass types have been the subjects of special study during recent years, namely, No. 1, a soda–lime–magnesia–silica glass, No. 2 a borosilicate glass of the Pyrex chemical glass type, containing approximately 80% SiO₂ and 12% B₂O₃. Ample supplies of each of these two glasses were prepared, and samples of them were distributed to glass analysts of repute, who, in the later stages of the Committee's work, followed a precisely drawn-up procedure. The results were assembled, discussed in detail and further check analysis carried out. The final analytical results were then statistically examined, and a mean composition and limits of accuracy were deduced. Having reached this stage the Committee decided to publish the results of its findings in the form of procedures which, from its own experience, it believes can be recommended.

CHEMICAL ANALYSIS COMMITTEE