NIT10 Nitrate Slimline 10" - Filter

NIT10 Nitrate Slimline 10" - Filter

Targeted nitrate reduction, without overcomplicating your system

Nitrates are one of the most difficult contaminants to remove from drinking water.
They’re commonly found in groundwater and agricultural regions, and unlike chlorine or sediment, they pass straight through most standard filters.

In New Zealand, water can meet legal standards while still sitting above levels associated with long-term health research. For many households, that creates a simple question — is “compliant” enough, or do you want to go further?

The NIT10 filter is designed as a focused solution. Using nitrate-selective resin, it reduces nitrate levels where standard carbon filtration cannot.

It’s ideal if you:

-Want to specifically target nitrates

-Already have a filtration system and want to upgrade it

-Prefer a simpler alternative before moving to full reverse osmosis

A small addition, designed to close a very specific gap in water quality.
Regular price $119.00
Unit price per
Tax included.

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Education

Nitrates are commonly found in groundwater, especially in agricultural regions.

They often come from:

  • Fertiliser runoff
  • Livestock activity
  • Natural soil processes

NZ Maximum Acceptable Value: 50 mg/L
Health-based guideline: 0.14 mg/L

This means water can be considered “safe” by regulation, while still sitting above levels associated with long-term health research.

New Zealand’s limits were designed to prevent immediate health risks.

More recent research looks at long-term exposure, which is why some households choose to reduce nitrates further.

You don’t need to overcomplicate it.

  • If you want a targeted solution → nitrate filter
  • If you want full-spectrum protection → reverse osmosis
  • If you want simple taste improvement → carbon filtration

It’s about choosing the level that feels right for you.

Product Specifications

Filtration Technology:Nitrate-selective anion exchange resin


Primary Function:Reduces nitrate levels in drinking water

Capacity (Based on Incoming Nitrate Levels):
~1200 litres at 10 mg/L nitrate
~2400 litres at 5 mg/L nitrate


Performance Note:
Filter lifespan varies depending on incoming nitrate concentration and overall water quality

Materials:
Constructed using FDA-grade components for safety and reliability

Installation

If this is the first time installing this, you will require a Slimline housing 10". Please add this to your cart if you don't already have one.

Product Manual

Download Manual

FAQ

Find the most frequently asked questions below.

  • Nitrate removal filters, particularly ion exchange filters, work by replacing nitrate ions (NO₃⁻) with other ions, commonly chloride ions (Cl⁻).

    Ion Exchange Resin: The filter contains a resin that is saturated with chloride ions. This resin is typically made of tiny beads of organic polymer that have sites that hold chloride ions weakly.

    Water Flow: As water containing nitrate ions flows through the resin bed, the nitrate ions are attracted to the resin due to their charge.

    Ion Exchange: The resin beads release chloride ions into the water in exchange for the nitrate ions. This process happens because the resin has a higher affinity for nitrate ions than chloride ions, causing the nitrate ions to displace the chloride ions.

    Removal of Nitrates: The nitrate ions attach to the resin beads, and the now chloride-rich water exits the filter. This reduces the nitrate concentration in the water.

  • Preparation: The ion exchange resin is preloaded with chloride ions. This is often done by soaking the resin in a solution of sodium chloride (NaCl).

    Nitrate Capture: As the contaminated water passes through the resin bed, nitrate ions are attracted to and held by the resin, while chloride ions are released into the water.

    Regeneration (if applicable): Over time, the resin becomes saturated with nitrate ions and loses its effectiveness. It can be regenerated by flushing it with a concentrated salt solution, which replaces the nitrate ions on the resin with chloride ions again.

    This method is effective for nitrate removal and is commonly used in water treatment systems to ensure safe drinking water. However, it does increase the chloride content of the treated water, which is usually not a problem since chloride is commonly found in water and is generally safe at the levels produced by the ion exchange process.

  • The filter significantly reduces nitrate levels, but exact removal depends on your incoming water quality. For near-complete removal, reverse osmosis systems are the most comprehensive option.

  • The lifespan depends on your starting nitrate levels:

    • Higher nitrate levels → shorter lifespan
    • Lower nitrate levels → longer lifespan

    As a guide:

    • Around 1200 litres at 10 mg/L
    • Around 2400 litres at 5 mg/L

  • This filter is designed to complement existing systems. It can be added to compatible setups where targeted nitrate reduction is required.

  • Most common filters (like carbon) improve taste and remove chlorine, but do not remove nitrates.

    Specialised media, like the resin used in this filter, is required.