Details | Washed & Graded Water Filter Sand | Silica Sand |
Color | Light brown to dark yellow | Off white/pale yellow /Snow white |
Density | 1750 kg per cubic meters | 100 lbs per cubic meters |
Acid Solubility: | < 0.5% | <5.0% |
Specific Gravity | 2.65 | 2.5 |
Hardness | 6.0 8.0 on MOH scale | 7 on MOH scale |
Uniform Coefficients | <1.4 | > 1.6 < 1 |