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Mohs Hardness: 5.5-6.6
Bulk Density: 100 lbs cuft

• Made of 100% Recycled Glass 
• Safe For Use Around Water
• American Made 
• Contains less than 1% free silica 
• Non-reactive & inert
• Beryllium is not listed on SDS
• CARB Approved / QPL Approved / Mil-Spec, SSPC AB-1, MIL-A-22262B(SH)