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

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.

Download a PDF copy of Filter Gravel.
Get Adobe PDF Reader

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) - < 1%
Porosity - 37 - 40%

Typical Chemical Analysis (%)

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

Typical Sizes

1/8" X 1/16"
1/4" X 1/8"
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