The ÖKO L3 filter for survival in the wilderness

ÖKO L3 filter

39.00 EUR

The ÖKO L3 Filtration Kit is a high-performance, lightweight and compact water filter, ideal for drinking water directly from rivers, lakes and other freshwater sources when hiking, camping or in the event of a disaster.

Weighing just 58 grams, the L3 filter can purify up to 1000 liters of water (if rinsed thoroughly after each use). It uses a hollow-fiber membrane capable of removing up to 99.999% of bacteria (such as E. coli) and 99.9% of parasites and protozoa (such as Giardia lamblia and Cryptosporidium), as well as viruses of 0.1 micron or larger.

Discover one of the first pressure-operated water bottles to feature a 0.1-micron hollow-fiber filter, designed to provide extreme levels of filtration.

Ideal for intrepid travelers and adventurers, the L3 filter is specifically designed to treat the most contaminated and inhospitable waters. Whether you're exploring remote regions or countries where water quality is uncertain, this water bottle guarantees unrivalled safety and purity.

Add a gourd filter for the complete kit?

I'd like to equip myself!

100% satisfied or your money back

"At ÖKO EUROPE, our policy is 100% satisfied customers".

And because you have the right to change your mind, you have 14 days to inform us and receive a full refund, without having to justify yourself!

Customer service based in France

Do you have any questions about your order?
If you haven't found the answer to these questions in our F.A.Q., please contact:

Send us a message via our page A question?
Call us on +33 (0)6 68 13 91 61 (Monday to Friday, 9am to 5pm)

We'll get back to you within 24 h.

Free 3x payment (min €100)

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Order by phone?

Our French customer service is available to answer your questions on +33 (0)3 80 63 51 73

Real, verified opinions

All our comments are verified and cannot come from unknown sources or be falsified.

ÖKO supports Water.org (M. DAMON)

ÖKO EUROPE is a partner of Water.org, Gary White and Matt Damon's association which has been helping to improve access to drinking water around the world for over 30 years. When you buy an ultra-filtering water bottle, you change the life of a family at the end of the world.

High-performance filtration

Removes up to 99.999% of bacteria, parasites and protozoa ≥ 0.1 micron in size without chemicals, ensuring safe drinking water.

Ideal for adventurers and travelers in high-risk areas

Designed for hikers, trekkers and travelers who explore remote environments or uncertain water resources.

High filtration capacity

Purifies up to 1,000 liters of water for greater autonomy in natural environments. Up to 3000 L if rinsed after each use.

How do I use the L3 filter kit with an ÖKO water bottle?

The ÖKO L3 filter is compatible with ÖKO 650 ml and 1 liter water bottles.

Simply insert the filter straw into the ÖKO bottle in place of the L2 filter, and drink directly.

It can be used WITHOUT the water bottle, simply dip the filter into the water and suck through the hose!

It's your emergency system in case you lose your ÖKO water bottle!

The integrated filter system purifies the water as it passes through, removing bacteria and other contaminants for instant drinking water.

A revolution in the world of hollow fiber

Discover a unique innovation: one of the first water bottles to feature a 0.1-micron hollow-fiber filter, activated by simple pressure!

Direct flow, instant filtration and optimal hygiene.

Each sip is purified, with no effort or waiting.

Simple operation for everyday use by several people.

ÖKO filter comparison: L3 vs L2

L3 filter: The extreme solution

Technology

Hollow fibers calibrated to 0.1 micron (1/10,000th of a millimeter).

Performance

What's filtered: Bacteria, E. coli, micro-organisms, parasites, protozoa, giardia lamblia, cryptosporidium, and other contaminants above 0.1 micron.

What passes: Particles smaller than 0.1 microns.

Key benefit

Robust, reliable filtration for highly contaminated or doubtful water.

Recommended for

Extreme situations (muddy rivers, highly polluted springs).

Travel to high-risk countries where drinking water is uncertain.

L2 filter: Everyday versatility

Technology

Hollow fibers calibrated to 1.2 microns + electro-adsorption (technology developed by NASA).
Electro-adsorption: Magnetizes negatively charged particles even smaller than 1 micron (viruses down to 0.01 micron), offering ultra-fine filtration on a broad spectrum of contaminants.

Performance

What's filtered: Bacteria, viruses, pesticides, herbicides, E. coli, micro-organisms, parasites, protozoa, giardia lamblia, cryptosporidium, chlorine, heavy metals, PFAS, disruptors and some particles even below 1 micron (thanks to electro-adsorption).

What passes through: Particles not captured by electro-adsorption (mainly mineral salts)

Key benefit

Balanced filtration for non-potable environments.

Recommended for

Daily use on tap.

Filtration of non-drinking water from dubious sources.

Travel, hiking and trekking

Technical data

Membrane filtration pore size

0.1 micron

Size

Fits into 650 ml and 1000 ml ÖKO filter bottles (2 tubes supplied)

Weight

58 grams only

Materials

ABS, UF, silicone

Water flow

Approx. 1L/min and 1.5m water pressure

Service life

Unused and stored in a dark, dry place: 15 - 20 years

Service life (after use)

2 to 3 years

Capacity for use

Up to 1000L (depending on water quality). Up to 3000 L if washed after each use.

Our opinion on the L3 OKO filter kit

Validated and approved!

Jan Vansinte

Founder of ÖKO EUROPE

What do you think?

à travers le monde

merci oko de m’avoir suivi à travers le monde dans mon trip en stop
france-mongolie puis le népal (jusqu’à 4600m)et maintenant l’australie ou je suis sûr qu’a chaque instant l’eau que je bois est pure et je suis protégé de tous parasites

Réels bienfaits pour la santé

Très efficace. J'avais quelques problèmes de digestion, de douleurs intestinales et des diarrhées régulières, depuis que j'utilise la gourde, tout cela a disparu. Et quand je l'oublie quelque part et que je me retrouve sans filtration, les problèmes ressurgissent en moins de 2 jours. Je parle de cette gourde à tous mes proches et plusieurs d'entre eux l'ont adoptée. Chacun a constaté des changements, disparitions des aphtes, plus de gastro-entérite, disparition de l'aérophagie, moins de tartre sur les dents, etc.. En conclusion, je pense que tout le monde devrait filtrer son eau avec les systèmes ÖKO.