PNP Undersink Ultra Fine 5 Micron Filter Cartridge

Overview

The PNP Undersink Ultra Fine 5 Micron Filter Cartridge is an ultra fine membrane filter cartridge made for plumbed-in (mains water) Ace PNP (Swing & Twist) systems.

It’s designed for customers who want a finer level of filtration than a standard carbon cartridge, helping deliver cleaner water straight from the tap in homes, offices, and bottleless cooler setups.

Important: This cartridge is for bottleless (plumbed-in) mains water systems and undersink installations. It is not for bottled water coolers.

Best For

Best for: homes wanting a higher level of filtration, office kitchens, bottleless (plumbed-in) water coolers, and households that want extra confidence with very fine particle filtration.

Compatibility

Suitable for: plumbed-in mains water Ace PNP (Swing & Twist) undersink systems (single and twin head) and bottleless water cooler filtration lines.

If you’re unsure about compatibility, check the product specs or contact us before ordering.

Key Features

• Micro-fine membrane filtration designed for very fine particle reduction.
• Ultra-fine rating: 0.3 micron (finer than standard 5 micron options).
• Flow rate: up to 2L per minute for everyday kitchen and office use.
• Tool-free changes: swap by hand (no spanner needed) with less mess.
• Can be paired with other PNP cartridge options to suit your water quality needs.
• Watermarked product manufactured in line with NSF and WQA requirements where applicable.

Technical Specifications

• Product type: undersink membrane filter cartridge
• Filtration type: micro-fine membrane
• Micron rating: 0.3 micron
• Flow rate: up to 2L per minute
• Replacement schedule: up to 1900L or 6 months (whichever comes first)
• Operating temperature: 4–38°C
• System type: Ace PNP (Swing & Twist) mains pressure
• System protection: 350kPa pressure-limiting valve required
• Lifespan note: filter life varies depending on water quality, turbidity, and demand

What’s the Difference vs the Standard 5 Micron Carbon Filter Cartridge?

Both are made for Ace PNP Swing & Twist plumbed-in systems, but they solve different problems:

• Ultra Fine (this cartridge – 0.3 micron membrane): focuses on very fine filtration. It’s chosen when you want a tighter micron rating and higher confidence with fine particles.
• Standard 5 Micron Carbon Filter Cartridge: focuses more on taste and odour improvement (carbon media) while also filtering fine sediment at a broader micron level.

Simple guide: choose Ultra Fine for finer filtration; choose 5 micron carbon when your main goal is improving taste/odour (chlorine) plus basic sediment reduction.

What’s in the Box

• 1x PNP Undersink Ultra Fine Filter Cartridge

How to Use: Installation & Maintenance

1. Confirm it’s plumbed-in: this cartridge is for mains water (bottleless) setups using Ace PNP Swing & Twist heads.
2. Turn off the water: shut off the cold-water supply before changing filters.
3. Remove the old cartridge: the automatic shut-off helps stop water flow when the filter is removed.
4. Install the new cartridge: align and lock it in place by hand (no spanner needed).
5. Pre-flush: flush before use and after long periods of inactivity.
6. Check for leaks: confirm it’s seated correctly before leaving it running.
7. Replace on schedule: up to 1900L or 6 months (or earlier if flow drops).

Limitations & Care Notes

• Plumbed-in only: not suitable for bottled water coolers or gravity systems.
• Pre-flush the filter prior to attaching to equipment or after long periods of inactivity.
• Do not use with water that is microbiologically unsafe or of unknown quality.
• Turn water off to the filter system if not in use for extended periods.
• Filter life can vary depending on water quality and demand.
• A 350kPa pressure limiting valve must be installed.
• Installation must be carried out by a licensed technician and comply with local standards and regulations.

Shipping & Returns

We ship Australia-wide. For dispatch timeframes, delivery info, warranty details, and returns, please see our Shipping, Return and Warranty Policy .

Ultra Fine Filter Cartridge FAQs

Is this for bottled or bottleless water coolers?

This cartridge is for bottleless (plumbed-in) mains water systems only. It is not for bottled water coolers.

How often do I replace it?

Replace at 1900L or 6 months (whichever comes first). Replace sooner if your flow rate drops.

Is the Ultra Fine cartridge the same as the 5 micron carbon cartridge?

No. The Ultra Fine cartridge is a 0.3 micron membrane style filter designed for finer filtration, while the standard 5 micron carbon cartridge is typically chosen for taste/odour (chlorine) improvement plus sediment reduction.

Why Buy From Ace Water Shop

• Australian-based support with practical product matching
• Fast shipping Australia-wide
• Quality-focused filtration solutions for homes and workplaces
• Clear replacement guidance and helpful after-sales support

Complete Your Water System

Pair your cartridge with other compatible options in our Undersink Water Filter Systems range to build the right combination for your water quality.