A straw filter that publishes both of the figures this shelf usually splits — a 0.01 micron rating and a 1500 litre cartridge life — and names all four stages of its element, while saying nothing about flow, weight or the thread it screws onto.
The bottom line Two published figures where most of this shelf gives one, and an element named stage by stage. Everything to do with handling — flow, weight, thread — is left out.
What this listing puts on record
A 0.01 micron rating, a four-stage element named as a hollow-fibre ultrafiltration membrane, PP cotton, coconut-shell activated carbon and an adsorption ball, a cartridge life of 1500 litres, a BPA-free plastic body the maker describes as medical grade, and a carabiner.
The pair of figures, and the one that is missing
0.01 micron and 1500 litres. These are the two numbers that let one filter be lined up against another: the first describes the element, the second describes how long it is stated to last. Plenty of listings on this shelf publish the litres and skip the microns.
No flow rate. Nothing in the title or the bullets gives litres per minute, and nothing describes how hard the straw draws. On a straw that is the specification you notice first in use.
The thread question
The maker states the filter can be fitted into a water bottle, and never says which bottle. A thread size is the one compatibility figure a straw filter can publish, and this listing has none. If you intend to screw it onto the bottle already in your pack, that is a measurement to take yourself before ordering.
How the maker’s claims are written here
The listing carries a 99.99 % figure for bacteria and heavy metals. It is reported here as what it is, attributed and nothing more: the maker states 99.99 % of bacteria. Nothing on this page says what the filtered water may be used for — that question belongs to the maker’s own instructions and to the local authority wherever you fill.
Before ordering
Measure the neck of the bottle you actually carry, and read the maker’s instructions on backflushing and on storage between trips. Both are what decide whether an element reaches the litres printed on the box.
Availability
Selling between 15 € and 19 € across the German, French and Spanish Amazon stores when this page was checked.
Nothing came back from the American, British and Italian Amazon stores, so the buy link there opens a local search instead of a page that is not there.
Every figure in this section is what Keepa returned on the day this page was last updated. Prices and offers change without notice.
Prices quoted in this text were read on 6 September 2026. The live price is at the top of the page.
What it does well, and where it gives way
Strengths
Publishes a micron rating and a cartridge life together, which most listings on this shelf do not
Names all four stages of the element rather than calling it a filter, so what sits inside the housing is known before ordering
The body material is stated as BPA-free plastic, described by the maker as medical grade
Compromises
No flow rate at all, so how long a litre takes through a clean element is unknown
No weight, on a format bought precisely because it is small
The thread is never dimensioned, so whether it meets a 28 mm PET neck or a soft flask cannot be established from the listing
Specifications
Micron rating
0.01 micron — stated twice, as 0.01 μm in the title and as a filtration accuracy of 0.01 micrometre in the bullets
Filter element type
Four stages, all named — a hollow-fibre ultrafiltration membrane, PP cotton, coconut-shell activated carbon and an adsorption ball — stated
Stated flow rate
Not published on the listing
Cartridge life
1500 litres — stated
Weight
Not published on the listing
Format
Straw, supplied with a carabiner; the maker states it can be drawn through at the source or fitted into a water bottle
Bottle thread compatibility
Not published on the listing — the maker states the filter is inserted into a water bottle, and never gives a thread size
Amazon reference
B09JGBMMXN (same reference on 3 Amazon marketplaces)
EAN
0725108617225
What people ask before buying
What does a 0.01 micron rating describe?
It is the pore size the maker states for the membrane — how wide the openings in the element are built to be. It describes the element, not the water leaving it, and it is the maker’s own figure rather than anything established here.
What is missing next to the 1500 litres?
A flow rate. Cartridge life says how many litres the element is stated to last for; flow says how long each of those litres takes, and it falls as the element loads. This listing publishes the first and not the second.
Press filter bottle · 500 ml · 0.2 micron stated · hollow fibre with carbon · 1500 litre cartridge
A 500 ml press bottle that publishes volume, pore size, element type and cartridge life — four of the seven columns this hub compares — and quotes the coarsest micron figure of the six filters here that give one.
Best for: A short walk or a run where one small bottle refilled at the stream is the whole water plan.
Filter and bottle set · 0.1 micron stated · hollow-fibre membrane · 4000 litre cartridge · 0.5 L bottle
A hollow-fibre filter sold with the bottle it screws onto, publishing both a 0.1 micron pore size and a 4000 litre cartridge life — and, because the bottle comes in the box, never needing to say what thread the filter takes.
Best for: A day walk where the water is refilled often and the whole set can live in a hip pocket.
Press bottle · 710 ml · 250 litre replaceable cartridge · no pore size published
A 710 ml press bottle with a replaceable cartridge rated at 250 litres, and the most talkative claim list on this shelf — every one of which is written here as the maker’s claim, because no pore size is published to check any of it against.
Best for: Travel where one bottle is treated at a time and the cartridge is expected to be replaced as a routine cost.
