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
- Confirm it’s plumbed-in: this cartridge is for mains water (bottleless) setups using Ace PNP Swing & Twist heads.
- Turn off the water: shut off the cold-water supply before changing filters.
- Remove the old cartridge: the automatic shut-off helps stop water flow when the filter is removed.
- Install the new cartridge: align and lock it in place by hand (no spanner needed).
- Pre-flush: flush before use and after long periods of inactivity.
- Check for leaks: confirm it’s seated correctly before leaving it running.
- 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.