- natural sand, exact classified, dried
- grain structure in accordance to TL 918,224 and/or BN 918.224 of the German Deutsch Bahn AG
- optimal grain form
- free from impurities
- SiO2 > 96 mass %
- hardness after Mohs: 7
Typical granulations are 0.8 - 1.6 and 0.71 - 1.6 mm.
- see product page: SILIGRAN