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SiO2 % | 90,8 min | ||||||
Al2O3 % | 4.0 | ||||||
Fe2O3 % | 1.5 | ||||||
CaO % | 0.4 | ||||||
MgO % | 0.5 | ||||||
Sonstige Oxide % | 2.5 | ||||||
Pb (Blei), ppm | 4.0 | ||||||
Arsen (As), ppm | 5.0 | ||||||
Verlust auf Zündung % | 0.5 |
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