GOST 22552.3-1977 Quartz sand, ground sandstone, quartzite and veiny quartz for glass industry. Method for the determination of mass fraction of aluminium oxide
2019GOST 22552.3-2019 Quartz sand, ground sandstone, quartzite and veiny quartz for glass industry. Methods for determination of aluminium oxide
1993GOST 22552.3-1993 Quartz sand, ground sandstone, quarzite and veiny quartz for glass industry. Methods for determination of aluminium oxide
1977GOST 22552.3-1977 Quartz sand, ground sandstone, quartzite and veiny quartz for glass industry. Method for the determination of mass fraction of aluminium oxide