In addition to availability of raw materials, other factors narrowing the choice of composition are glass color, workability, meltability, and sometimes, chemical durability of the glass.

• 除了原材料的可获得性以外,其他因素也限制了玻璃组分的选择,如玻璃颜色、可加工性和可熔性,在某些时候,还需考虑玻璃的化学耐久性能。