Calcite is a naturally occurring calcium carbonate media One of the advantages of Calcite is its self limiting property When properly applied it corrects pH only enough to reach a non corrosive equilibrium It does not overcorrect under normal conditions Upon contact with Calcite acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces the potential leaching of copper lead and other metals found in typical plumbing systems Periodic backwashing will prevent packing reclassify the bed and maintain high service rates Depending on pH water chemistry and service flow the Calcite bed will have to be periodically replenished as the Calcite is depletedAs the Calcites calcium carbonate neutralizes the water it will increase hardness and a softener may become necessary after the neutralizing filterADVANTAGESNaturally occurring materialLow uniformity coefficient for maximum contact for controlled pHcorrectionSlower reacting for controlled pH correctionInexpensive PHYSICAL PROPERTIESColor Near whiteBulk Density 90 lbscu ftMesh Size 16 x 40Specific Gravity 27Effective Size 04 mmUniformity Coefficient 15Hardness 30 Mohs scaleComposition CaCO3 95 min MgCO3 30 max CONDITIONS FOR OPERATIONA gravel support bed is recommendedWater pH range 50 70Bed depth 24 30 inFreeboard 50 of bed depth minBackwash rate 8 12 gpmsq ftBackwash Bed Expansion 35 of bed depthService flow rate 3 6 gpmsq ft but may be modified to adapt to localconditions Additional Details ------------------------------ Bullet point: Naturally occurring material| Low uniformity coefficient for maximum contact for controlled pH correction| Slower reacting for controlled pH correction| Inexpensive| Color: Near white| Bulk Density: 90 lbs./cu. ft.| Mesh Size: 16 x 40| Specific Gravity: 2.7| Effective Size: 0.4 mm| Uniformity Coefficient: 1.5| Hardness: 3.0 (Mohs scale)| Composition: CaCO3 95% min. MgCO3 3.0% max.| A gravel support bed is recommended| Water pH range: 5.0-7.0| Bed depth: 24-30 in.| Freeboard: 50% of bed depth (min.)| Backwash rate: 8-12 gpm/sq. ft.| Backwash Bed Expansion: 35% of bed depth| Service flow rate: 3-6 gpm/sq. ft. but may be modified to adapt to local conditions Product description: Calcite is a naturally occurring calcium carbonate media One of the advantages of Calcite is its self limiting property When properly applied it corrects pH only enough to reach a non corrosive equilibrium It does not overcorrect under normal conditions Upon contact with Calcite acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces the potential leaching of copper lead and other metals found in typical plumbing systems Periodic backwashing will prevent packing reclassify the bed and maintain high service rates Depending on pH water chemistry and service flow the Calcite bed will have to be periodically replenished as the Calcite is depletedAs the Calcites calcium carbonate neutralizes the water it will increase hardness and a softener may become necessary after the neutralizing filterADVANTAGESNaturally occurring materialLow uniformity coefficient for maximum contact for controlled pHcorrectionSlower reacting for controlled pH correctionInexpensive PHYSICAL PROPERTIESColor Near whiteBulk Density 90 lbscu ftMesh Size 16 x 40Specific Gravity 27Effective Size 04 mmUniformity Coefficient 15Hardness 30 Mohs scaleComposition CaCO3 95 min MgCO3 30 max CONDITIONS FOR OPERATIONA gravel support bed is recommendedWater pH range 50 70Bed depth 24 30 inFreeboard 50 of bed depth minBackwash rate 8 12 gpmsq ftBackwash Bed Expansion 35 of bed depthService flow rate 3 6 gpmsq ft but may be modified to adapt to localconditions