Nitrate Reduction Specialty Filter 4.5"x 20"

  • Strong base anion resin filter for the highest nitrate removal

  • Highly uniform particle size, greater resistance to bead breakage

  • High flow rate, low pressure drop

  • 20" filter treats up to 25,000 PPM

  • 10 micron nominal rating

  • Listed Price:$139.00
  • Total Saving:$10.05
  • Sales Price:$128.95

Options & Upgrades

New O-Ring for a perfect seal of RO filter housing



    Nitrate Removal

    The FI-NITRATE20-BB filters use strong base anion exchange resins which are supplied in the chloride form as moist, tough, uniform spherical beads. These resins are especially useful in treating nitrate contamination due to their ability to remove nitrates preferentially in the presence of sulfates and other divalent ions.

    Nitrates have no detectable color, taste or smell at the concentrations involved in drinking water supplies, and they do not cause discoloration of plumbing fixtures, so they remain undetectable to our senses. Often found in rural areas, nitrate levels should not exceed 10 mg/L based on EPA standards. This is especially important for newborn infants because their bodies are particularly susceptible to negative health effects of nitrates. Influent and effluent nitrate levels should always be monitored to ensure adequate removal from drinking water sources.

    Getting nitrate-free water has never been easier. The FI-NITRATE20-BB filter has a capacity of 25,000 ppm* (mg/L) and will fit in our 20" Big Blue housings.

    * To calculate how many gallons the Nitrate Reduction Filter can last for the Nitrate level in your source water, take capacity level (25,000 ppm for 20" Nitrate Filter or 12,000 ppm for 10" Nitrate Filter) and divide it by the Nitrate Level from your water before it enters the filter.

    Example (1): If the Nitrate level in your water is 0.5ppm. It can treat up to 50,000 gallons (25,000 ppm / 0.5ppm) for 20" Nitrate Filter or treat up to 24,000 gallons (12,000 ppm / 0.5ppm) for 10" Nitrate Filter.

    Benefits and Applications

    • Remove both natural and man-made sources of nitrates
    • Nitrate-free healthy showers, baths, face washes and oral rinses
    • Nitrate-free and clean water delivered to all faucets in home
    • Nitrate-free and clean water for food and vegetables washing
Performance & Specification

    Cartridge Specifications and Performance Data




    4.5"D x 20"L


    8 lbs


    25,000 ppm (mg/L)

    Flow Rate (gpm)

    3 gpm

    Filter Media 

    Anion Resin

    Micron Rating

    10 micron

    Pressure Range

    25 psi to 100 psi

    Temperature Rating

    40º F to 100º F
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