硅> 98.8%,铁< 0.35%,镍< 0.76%,钙+镁 < 0.36%,钾+钠< 0.27%,硫+磷< 0.0015%,Fe、AS、HgF等无含量
硅99.95%,铝0.006%,铁0.0053%,镁0.0012%,钙0.009%,钾0.0069%,白度96
硅99.26%,铝0.14%,铁0.26%,钠0.13%
硅99.2%,铝0.37%,铁0.316%
硅99.5%,铁0.05%
40-140目,铁100ppm
4N高纯石英砂,70-140目,硅99.991%,白度93