Alb Filter - Duo Nano - water filter for the tap, natural stainless steel
Alb Filter - Duo Nano - water filter for the tap
Alb Filter - Duo Nano - water filter for the tap
Alb Filter - Duo Nano - water filter for the tap
Alb Filter - Duo Nano - water filter for the tap
Graphic of the Duo installation on the tap
Duo on a tap with Nano cartridge in the foreground
Alb Filter Duo with Nano cartridge and pre-filter cap in stainless steel colour
Alb Filter - Duo Nano - Water filter for the tap, matt stainless steel
Alb Filter Duo with Nano cartridge and pre-filter cap in matt stainless steel colour
Alb Filter - Duo Nano - Water filter for the tap, black stainless steel
Alb Filter Duo with Nano cartridge and pre-filter cap in black
Tap filter

Duo Nano

(81)
Safe from bacteria and legionella – certified germ barrier down to 0.1 µm, directly on the tap.
  • Easy to install
  • 10-year warranty on the stainless steel housing
  • Clean water instantly
Colour Stainless steel natural
Version
How do I find out my thread size?
CHF 189.90incl. VAT
In stock · delivery in 1–2 working days
Free shipping from CHF 80by A-Post from Switzerland
14-day right of returnin original packaging & unopened
10-year warrantyon the stainless steel housing
Made in southern Germanyin-house production

Pairs perfectly with this

Nano Cartridge Nano CartridgeCHF 59.90
Pre-filter for Duo Nano Pre-filter for Duo NanoCHF 8.90
Visio module for DUO housing Visio module for DUO housingCHF 29.90

Duo Nano

Germ and bacteria filter for the tap

The Duo Nano two-way tap filter delivers the best drinking water only when you really need it. This conserves the cartridge's capacity – and with it the environment and your wallet. With its highly effective 0.1 µm hollow-fibre membrane, the Nano cartridge effectively retains bacteria, legionella and microplastics from the water.

The Duo is available in stainless steel, matt or black and turns any kitchen tap into a real eye-catcher. The filter housing fits all common taps with an M22 thread. With the included M24 adapter, the Alb Filter Duo is ready to use straight away in many cases. If a different adapter is required, we'll be happy to include it. Ideally, determine the thread size of your tap before ordering – you'll find instructions in our thread guide.

The Duo filter housing

Made of high-quality V4A stainless steel

The robust and durable stainless steel housing is free of harmful substances, corrosion-resistant, easy to clean, germ-resistant and neutral in odour and taste.

Easy activation of the filter stage

With the stainless steel diverter lever, you can quickly switch between filtered and unfiltered water.

Compatible with all standard taps

Thanks to a wide range of adapters, the Duo can be installed on almost all standard taps. Our thread guide helps you find the right adapter.

One housing, three cartridges

Choose between our drinking water cartridges Active, Active+ and Nano.

10-year warranty on the stainless steel housing

10-year warranty on the stainless steel housing

Our Duo stainless steel housings come with a 10-year manufacturer's warranty.

Made in southern Germany

The Duo filter housing is manufactured in southern Germany and meets Alb Filter's high standards.

Filtered or unfiltered?

With the stainless steel diverter lever, you decide with a simple flick: filtered water for drinking and cooking –
unfiltered water at full mains pressure for washing up.

This saves filter capacity and significantly extends the life of the cartridge.

Filtered or unfiltered?

Will it fit my tap?

The Duo fits all standard taps with an M22 female or M24 male thread – for other sizes, matching adapters are available (selectable free of charge when ordering).

Not suitable for:

  • pull-out taps without a locking mechanism
  • taps with sensor technology
  • permanently fitted or oval/square aerators
  • unpressurised water heaters connected upstream

In these cases, one of our under-sink water filters is better suited.

View the thread guide
Will it fit my tap?
What is filtered?

What is filtered?

Nano cartridge with 0.1 µm hollow-fibre membrane: it retains 99.999% of all germs and bacteria purely mechanically – certified according to ASTM F838-15A, at a full flow rate of approx. 11 l/min.

Microorganisms

Microorganisms

The Nano cartridge focuses on filtering germs and bacteria in high concentrations, e.g. E. coli, Vibrio cholerae, Shigella, Salmonella.

Legionella

Legionella

The Nano cartridge reliably filters legionella out of tap water. Whether as a preventive measure or following a positive legionella test.

Microplastics and other fine particles

Microplastics and other fine particles

The pores of the hollow-fiber membrane are about 700 times finer than a hair (0.1 µm) – microscopically small plastic particles and other particles can't get through.

Biofilm-forming microorganisms

Biofilm-forming microorganisms

Reduces the formation of biofilm and other deposits caused by bacteria.

Stops germs and bacteria

Inside the Nano cartridge is a hollow-fiber membrane made of thousands of ultra-thin tubes, similar to bundled drinking straws. Its pores measure just 0.1 µm – about 700 times finer than a human hair and therefore smaller than bacteria. This keeps out germs, bacteria and legionella as well as microplastics and other particles.

Stops germs and bacteria

Protection against legionella!

This certified quality solution offers maximum protection against Legionnaires' disease. The Nano cartridge can be used both preventively and in the event of acute legionella contamination and provides protection in accordance with ASTM F838-15A.

Protection against legionella!

Optionally with a pre-filter cap

The fine 0.1 µm membrane of the Nano cartridge benefits from protection against coarse particles: the optional pre-filter cap retains sediment, rust and sand, thus extending the service life of the cartridge – it simply slips over the cartridge.

Alb Filter - Pre-filter for Alb Filter Duo Nano

Made in
southern Germany

14-day
right of return

A-Post shipping
free from CHF 80

Easy payment
with TWINT or card

What's included

  • 1× Alb Duo stainless steel housing
  • 1× Nano filter cartridge
  • 1× thread adapter M22 male to M24 male (alternative selectable free of charge)

Technical data

Duo housing

Dimensions (H × W)
109 × 120 mm
Weight
450 g
Colours
Natural stainless steel, matt, black
Material
V4A stainless steel
Connection
M22 × 1 female thread

Check the dimensional drawing: make sure there is enough space under the tap.

Downloads

Manual DE (PDF) Manual EN (PDF) Lab report (PDF)Legionella & E. coli – Nano filter test Lab report ASTM F838-15A (PDF)Certified germ retention

Nano cartridge

Dimensions (H × W)
95 × 47 mm
Weight
55 g
Filter material
Hollow-fibre membrane (plastic)
Filtration technology
Mechanical filtration
Filter type
Germ filter
Filtration fineness
0.1 µm
Replacement interval
6 months
Capacity
5,000–7,000 l*
Flow rate
approx. 11 l/min**
Certification
ASTM F838-15A

Flow rate

Flow rate at approx. 3 bar water pressure

* Capacity depends on the quality of the incoming water. ** Flow rate at approx. 3 bar water pressure; filter performance depends on the flow speed.

Frequently asked questions

What thread does my tap have?

Most kitchen taps have an M22 female or M24 male thread. Unscrew the aerator and measure – our thread guide takes you to the right adapter in 4 steps.

What if the adapter doesn't fit?

We'll exchange adapters free of charge until one fits. Just write to us with a photo of your tap.

How much does the Duo reduce limescale?

The Active Plus+ cartridge reduces carbonate hardness by approx. 4–6 °dH through ion exchange – limescale stains on glasses and in the kettle visibly decrease.

Does the filter reduce the water pressure?

Filtered water flows at approx. 6 l/min (at 3 bar) – enough for drawing water and cooking. For washing up, you switch to unfiltered using the lever and get the full mains pressure.

Does the Duo fit pull-out taps?

Only if the spray head can be locked in place. The Duo cannot be fitted to freely movable hose spray heads or sensor taps.

Customer reviews

Genuine buyer reviews – invited after purchase, independently collected and published by REVIEWS.io.

4.88
Based on 81 reviews
Write a review
  • Frank Verified buyer Dortmund, DE · 6 months ago

    Purchase, ordering and delivery worked very well. Thank you very much

    Translated from German
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    Einkauf, Bestellung und Lieferung haben sehr gut funktioniert. Vielen Dank

  • Susanna Verified buyer Munich, DE · 7 months ago

    Fast, straightforward purchase and delivery Excellent and easy installation Thank you very much!🤍

    Translated from German
    Translated from German · Show originalHide original

    Schnelle, unkomplizierte Einkauf und Lieferung Hervorragende und einfache Installation Vielen Dank!🤍

  • Anonym Verified buyer Emmendingen, DE · 7 months ago

    At the moment I can rate the filter as "very good", totally easy and really quick installation, and it works perfectly and finally my water from the tap tastes good!

    Translated from German
    Translated from German · Show originalHide original

    Ich kann den Filter momentan mit "sehr gut" bewerten, total einfache und ganz schnelle Montage, und es funktioniert einwandfrei und endlich schmeckt mein Wasser aus dem Wasserhahn!

  • Helmut u Verified buyer Frankfurt am Main, DE · 9 months ago

    Can't give one yet, as we're currently using the ActivePlus filter.

    Translated from German
    Translated from German · Show originalHide original

    Kann ich noch nicht abgeben, da wir derzeit den ActivePlus Filter verwenden.

  • Tobias t Verified buyer Darmstadt, DE · 12 months ago

    Ordering, shipping, installation, use, effect - everything uncomplicated and easy to do -> great

    Translated from German
    Translated from German · Show originalHide original

    Bestellung, Versand, Montage, Anwendung, Wirkung - alles unkompliziert und leicht auszuführen -> prima

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