Doulton® Nitrate Reduction Cartridge (9F04) for DUO & TRIO systems
from this shop’s own product feed
Price history
We started tracking this price on 25 Oct 2026. The chart fills in as prices change, so you can see whether today’s price is a good one.
Where to buy
Not in the rewards plan
Prices come from each shop’s own product feed and are checked daily; the shop’s own site always has the final price and delivery cost. AdvantageLife may earn a commission when you buy through these links; it never changes the price you pay. For shops marked Team rewards, AdvantageLife shares that commission with qualifying members under the Deal Finder rewards plan once the shop has paid. Amazon purchases earn no member rewards.
About this product
Our WRAS-approved replacement nitrate filter is designed to reduce nitrates in municipal water supplies, for use within a multi-filtration system like our DUO countertop system and our DUO & TRIO under-counter system. Pair our nitrate filter with our ceramic filter element to enjoy consistently clean, tasty filtered drinking water. Replacement nitrate filter for the reduction of nitrates For use within a multi-filtration system Not suitable for single chamber system Pair with our ceramic filter for clean, filtered drinking water
Earn from your team’s shopping
Members with a $20 package earn rewards when the people they invite shop through AdvantageLife. Joining is free.
Join AdvantageLife free