| Anthracite | Filter Sand | Filter Gravel | Garnet Sand | Granular Bone Char | Coal Carbon | Coconut Carbon | | Pelletized Carbon | Impregnated Carbon | Acid Washed Carbon | Greensand Plus |

Filter Gravels are mined from high quality aggregate reserves with high hardness physical properties. Thereby making them suitable for extended use with the water and wastewater filtration plants without deteriorations.

Our filter gravels meet or exceed the AWWA-B100 and ANSI/NSF-61 Standards.

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1/4" X 1/8" and 3/4" X 1/2"

Physical Properties

Hardness (Moh's Scale) - 7 avg.
Specific Gravity - 2.65 avg.
Density - 100 Lbs/Ft³
Color - Gray to Amber
Acid Solubility (AWWA B100) - Less than 1%
Porosity - 37 - 40%

Typical Chemical Analysis (%)

Silica, SiO₂ - 90.27
Aluminum, Al₂O₃ - 4.53
Sodium, Na₂O - 1.72
Potassium, K₂O - 0.50
Iron, FeO - 0.77
Magnesium, MgO - 0.037
Calcium, CaO - 0.87
Titanium, TiO₂ - 0.11
Iron Oxide, Fe₂O₃ - 0.087
Asbestos - None

Typical Sizes

1/8" X 1/16"
3/8" X 1/4"
1/2" X 1/4"
3/4" X 3/8"
3/4" X 1/2"
1-1/2" X 3/4"

Packaging

50 or 100 pound bags/Supersacks