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Natural gravel |
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The gravel is the flow of rivers centuries from wear particles were egg-shaped oval, 100-color, surface smoothness, high strength. Physical and chemical composition stability, does not contain mica, is the best filter mat, water purifiers for quality filler.
Note： National Media Center in quality
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Technical parameters |
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Analysis project |
Analysis data |
Analysis project |
Analysis data |
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Silica % |
≥98 |
Packing Bulk Densityg/cm3 |
1.85 |
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Density g/cm3 |
2.66 |
The hydrochloric acid may dissolving rate % |
＜3.5 |
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