Specifications:

• Filter Cartridge, Aquacera: A-3 BB Nitrate 4.5 x 10""; fits standard big blue housings.
• These filter elements are designed to reduce nitrates, nitrites, and sulfates in drinking water.
• They are constructed with materials which are FDA approved.
• They can be regenerated with brine.
• The A-3 filter element uses an ion exchange resin that has been especially prepared for the reduction of nitrates and nitrites in drinking water.
• Estimated removal rates vary based on the levels of nitrate and sulfate in the raw water, but typical removal rates would be 15,000 ppm of combined sulfate and nitrate.
• Flow rate recommended is 0.5 gallons per minutes.
• A nitrate test kit and regular nitrate testing is recommended for determining when to change or regenerate the filter cartridge.