RAYNED
  • Home
  • About Us
  • Certifications
  • Careers
  • News & Events
  • Contact Us

PRODUCTS

  • Automatic Filter Installation Diagram
  • Commercial & Residential Filters
  • Filter Vessels
  • Filter Components
  • Filter Media
  • Domestic Filters
  • Water Coolers & Drinking Fountains
  • Filter Cartridges
  • UV Sterilizer / Copper Silver Ionizer / Chemical Dosing System
  • Gray Water System
  • Reverse Osmosis Plant

Calcite

Calcite is a crushed and screened white marble media which can inexpensively be used to neutralize acidic or low pH waters to a neutral, less corrosive effluent.

top_mount_valve

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 depleted.

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

Calcite can be effectively combined with Corosex to combine the high flow neutralization properties of Corosex, along with the slower reacting low flow properties of Calcite, increasing the ability to correct low pH.

ADVANTAGES
Naturally occurring material
Low uniformity coefficient for maximum contact for controlled correction
Slower reacting for controlled correction
Inexpensive
PHYSICAL PROPERTIES
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.
CONDITIONS FOR OPERATION
A gravel support bed is recommended
Water pH range: 5.0-7.0
Bed depth: 24-30 in.
Freeboard: 50% of bed depth
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
REQUEST FOR CATALOGUE
© Copyright 2025 RAYNED