The product was obtained as a result of crushing and enrichment of vein quartz from deposits of the Subpolar Urals.
Coarseness: -0,315+0,1 mm. The content of the main substance (mass fraction SiO2) is more than 99.9%.
Production quality corresponds to TU-5726-001-11496665-97 (optical glassmaking), coarse grade 1 (OQ-3)..
Tell us what you need and get quotes from verified suppliers