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40 lbs of Saint-Gobain NorPro Denstone 99 ultra-high purity ceramic media in 1/4 inch (6mm) spheres. Engineered with high-purity alpha-alumina, Denstone 99 is industry-renowned for zero batch contamination, extreme mechanical hardness, and high thermal stability. With an exceptional minimum crush strength of 220 lbf (100 kgf) per sphere, high packing density, and ultra-low silica leaching, these spheres eliminate chipping, spalling, and fine dust during heavy agitation. Ideal for high-impact ball milling, precision laboratory grinding, pyrotechnics, and catalyst bed support. All quantities are weighed accurately, double-sealed in heavy-duty poly bags, and packed securely for fast shipping!

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