Le filtre ÖKO L3
pour survivre en pleine nature

Features of ÖKO's L3 ultra-filtering straw

High-performance filtration
Élimine jusqu'à 99,997 % des bactéries, parasites et protozoaires d'une taille ≥ 0,1 micron sans produits chimiques, garantissant une eau de meilleure qualité.

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
Utilisable jusqu’à 1 000 litres d’eau, offrant une grande autonomie en milieu naturel. Jusqu’à 3 000 litres avec un rinçage après chaque utilisation.
Comment utiliser le filtre L3 en kit avec une gourde ÖKO ?
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!
Le système filtrant intégré réduit de manière mesurable plus de 200 polluants, voir les analyses (sur la page dédiée) des laboratoires accrédités COFRAC (ISO/IEC 17025).
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 a simple push of a button!
Direct flow, instant filtration and optimal hygiene.
Chaque gorgée est plus agréable, sans effort ni attente.
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.
Recommended for
Filtration robuste pour les eaux douteuses ou les voyages dans des pays à risque.
Consultez notre page sur les différents pays et les niveaux de filtration recommandés afin de savoir si le filtre L3 sera suffisant ou si un traitement additionnel sera nécessaire.
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 electroadsorption (mainly mineral salts)
Key benefit
Balanced filtration for non-potable environments.
Recommended for
Filtration équilibrée et adaptée pour une utilisation quotidienne au robinet.
La filtration d'eau non-potable issue de sources peu ou moyennement sédimentées dans le cadre de voyages, randonnées ou de trekking.
Consultez notre page dédiée afin de savoir si le filtre L2 sera suffisant pour votre déplacement.
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
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