Nitrate Removal Inline Filter RO Cartridge, white inline housing with light green label
Nitrate Removal Inline Filter RO Cartridge, white inline housing with light green label
Water Filter CartridgesSKU CQE-RC-04061

Nitrate Removal Inline Filter RO Cartridge

$56.05 $59.00

Save $2.95 compared with one-time purchase

Important Note: The cartridge(s) in this system require manual salinity regeneration. The media must be recharged in order to maintain optimum performance. If the media is not regenerated, then the media will exhaust and result in a permeate of 0. The cycle of regeneration will vary based on the influent level of contaminants. The regeneration process should be done every 20 to 30 days depending on level of nitrate.

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Shipping

Free shipping on residential orders over $150 within the lower 48 US states.

Order by 3:00 PM Eastern on a business day and most filters, cartridges and smaller items leave our facility that same day. Standard residential systems ship within 1 to 2 business days, and whole house, custom and specialty systems typically within 3. So far in 2026, 95% of our orders have shipped within one business day and 99% within five (based on an internal review of our order records).

Once shipped, standard delivery typically arrives in 3 days to the Southeast, Northeast and Southwest, and in 4 days to the Midwest and the West. Need it sooner? UPS 2nd Day Air and Next Day Air are available at checkout for eligible products. Systems that ship by freight can take longer and may need a delivery appointment.

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Our team answers questions about products, orders, installation, troubleshooting and replacement parts.

Phone: 770-951-5600 or (800) 934-0051

Email: help@crystalquest.com. We reply within 24 to 36 hours.

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Hours: Monday to Friday, 9:00 AM to 5:00 PM Eastern. We observe U.S. federal holidays.

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Applications

  • Pre and post-point-of-use reverse osmosis
  • Ice maker and refrigerator 
  • Water cooler/fountain

USGS map of predicted nitrate in shallow US groundwater, mostly low with hot spots over 10 mg/L

Important Note: The cartridge(s) in this system require manual salinity regeneration. The media must be recharged in order to maintain optimum performance. If the media is not regenerated, then the media will exhaust and result in a permeate of 0. The cycle of regeneration will vary based on the influent level of contaminants. The regeneration process should be done every 20 to 30 days depending on level of nitrate.

The process of regeneration involves dissolving salt in water (2-3 cups of salt for every 3-4 cups of water) stir well and soak (you may want to use something to hold the cartridge down) the cartridge for 1-2 hours, then soak the cartridge in tap water for an additional 1-2 hours, rinse with the tap running tap water and reinstall the cartridge. Regeneration is not required before its first use even if the cartridge has been unopened for a period of time.