Acidic waters on contact with Calcite slowly dissolve the calcium carbonate media 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 and maintain high service rates. Depending on pH and service flow, the Calcite bed will have to be periodically added to as the dissolved calcite depletes.

As the Calcite's calcium carbonate neutralizes the water, it will increase hardness and a softener may become necessary after neutralizing filter.

Advantages:

• High uniformity coefficient for maximum contact for controlled correction
• Slower reacting
• Inexpensive

Physical Properties:

• Color - Near White
• Density - 100 lbs./cu.ft.
• Composition - CaCO3, 95% minimum
  MgCO3, 3.0% maximum

Conditions for Operation:

• pH - 5 - 6
• Bed Depth - 24 - 30in.
• Backwash Rate - 8-12gpm.sq.ft.
• Backwash Bed Expansion - 35% of bed depth
• Service Flow Rate - 3-6 gpm/sq.ft. invariably give satisfactory results but may be modified in view of local conditions.