Read the stated micron rating, the flow, and the cartridge life · review
The only electrically pumped filter in this group — six stages, a 1.5 meter (4.9 ft) hose and 700 milliliters a minute — publishing a liters-per-charge figure where this shelf asks for a cartridge life.
An electric six-stage filter, 0.01 micron, 350 g (12.3 oz).
BKLES states a high-torque magnetic motor in a micro water pump, high-speed and low-noise, pushing 700 ml per minute, and supporting purification of up to 168,000 ml of water on a single charge; double 0.01 micron high-precision filtration ensuring 99.999 per cent accuracy through a six-level system of ultrafiltration membranes, PP cotton, KDF and activated carbon; an electrically driven pump with an emergency light; a weight of 350 g (12.3 oz) with a multifunctional storage bag and a 1.5 m (5 ft) hose; and two separate Amazon listings for the replacement pre-filter and internal filter.
No cartridge life. No thread. No removal rate tied to an organism.
The distinction the whole shelf turns on.
One hundred and sixty-eight thousand milliliters on a single charge says how long the motor runs.
Cartridge life says what the filtering costs. This shelf’s introduction calls it the figure that decides running cost, and the buying tip asks for price divided by it.
Here there is no divisor. Replacements are pointed at by ASIN searches, not by a liter figure.
UF, PP cotton, KDF, carbon.
Sediment is caught before the membrane sees it. KDF reduces chlorine and some metals. Carbon addresses taste.
Only one other listing in this group has carbon at all, and no listing on this shelf names four media.
What is absent is a removal rate attached to any of them. Ninety-nine point nine nine nine per cent accuracy names no organism.
The case for a motor.
Twenty liters by hand is twenty minutes of pumping. This fills bottles for a group while you do something else, down a 1.5 m (5 ft) hose that reaches water a bag cannot.
The cost is 350 g (12.3 oz), a charge state, and a motor among the things that can fail.
The American Amazon store was listing it at about $58 at the time of writing.
Every figure here is what Keepa held on the day this page was last revised. Offers and prices shift without warning.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| Micron rating | 0.01 micron, stated as doubled — double 0.01 micron high-precision filtration. It is the finest rating published in this group, and matches three European listings on this shelf. The listing adds 99.999 per cent accuracy, which is a phrase rather than a removal rate: it names no organism |
|---|---|
| Filter element type | A six-level system of ultrafiltration membranes, PP cotton, KDF and activated carbon — the most stages named by any listing on this shelf. PP cotton is a sediment pre-stage, KDF a copper-zinc medium for chlorine and metals, and carbon for taste |
| Stated flow rate | 700 ml per minute — stated, from a high-torque magnetic motor in a micro water pump, described as high-speed and low-noise. The second highest flow on this shelf after the Katadyn’s stated liter a minute, and the only flow here that does not depend on the user |
| Cartridge life | Not published. The listing publishes 168,000 ml — 168 liters — of purification on a single charge, which is a battery figure and not an element life, and then directs you to two separate Amazon listings for a pre-filter and an internal filter. So the running cost this shelf is built on cannot be calculated from this page |
| Weight | 350 g (12.3 oz) — stated, given as 12 oz, with a multifunctional storage bag. The heaviest filter in this group |
| Format | An electric pump with a 1.5 m (5 ft) hose, stated to filter from ponds, streams, lakes and rivers, with an emergency light fitted and a bag that clips to a belt. The hose length is published by no other listing on this shelf |
| Bottle thread compatibility | Not published. No thread and no bottle adapter is named, so the output goes wherever the hose is pointed |
| Amazon reference | B0BGLHX2JK |
| EAN | 0732004613862 |
No, and this is the most important thing to understand about the page. The listing states purification of up to 168,000 ml on a single charge — that is 168 liters between battery charges, which tells you how long the motor runs, not how long the element lasts. Cartridge life is the figure this shelf's introduction calls the one that decides running cost, and the buying tip asks you to divide the price by it. On this listing that division cannot be done: no element life is published, and replacements are pointed at through two separate Amazon searches for a pre-filter and an internal filter.
Chemistry and taste, which a membrane alone cannot do. Ultrafiltration membranes at 0.01 micron hold back bacteria, protozoa and much more besides; PP cotton catches sediment before the membrane sees it, which protects the expensive part; KDF is a copper-zinc medium that reduces chlorine and some heavy metals; activated carbon addresses taste and odor. No other listing on this shelf names four media, and only the Katadyn in this group has carbon at all. What is missing is a removal rate tied to any of them: the page offers 99.999 per cent accuracy, which names no organism.
Because twenty liters by hand is twenty minutes of pumping. At 700 milliliters a minute and no effort, this fills bottles and bladders for a group while you do something else, and the 1.5 meter (4.9 ft) hose reaches water you cannot carry a bag to. For a vehicle camp that is a real advantage. Against it: 350 grams, a battery that limits you to 168 liters before charging, a motor that can fail, and an element whose life and replacement cost the page declines to state.
Close prices, same category: comparable camping gear. We keep only the specifications all of them publish, because a column with gaps compares nothing.
| Model | Price | Micron rating | Filter element type | Stated flow rate | Cartridge life |
|---|---|---|---|---|---|
| BKLES BK-2000 | $58 | 0.01 micron, stated as doubled — double 0.01 micron high-precision filtration. It is the finest rating published in this group, and matches three European listings on this shelf. The listing adds 99.999 per cent accuracy, which is a phrase rather than a removal rate: it names no organism | A six-level system of ultrafiltration membranes, PP cotton, KDF and activated carbon — the most stages named by any listing on this shelf. PP cotton is a sediment pre-stage, KDF a copper-zinc medium for chlorine and metals, and carbon for taste | 700 ml per minute — stated, from a high-torque magnetic motor in a micro water pump, described as high-speed and low-noise. The second highest flow on this shelf after the Katadyn’s stated liter a minute, and the only flow here that does not depend on the user | Not published. The listing publishes 168,000 ml — 168 liters — of purification on a single charge, which is a battery figure and not an element life, and then directs you to two separate Amazon listings for a pre-filter and an internal filter. So the running cost this shelf is built on cannot be calculated from this page |
| Sawyer SP303 Squeeze with Cnoc 2 L | $65 | 0.1 micron absolute — stated, with the listing spelling out what absolute means: no pore is larger than 0.1 microns. Removal rates of 99.99999 per cent of bacteria, 99.9999 per cent of protozoa and 100 per cent of microplastics are published | A hollow-fiber membrane whose fiber walls are stated to be thicker than typical hollow fiber, making them stronger and allowing more rigorous backwashing. That is a claim about the element’s tolerance of cleaning rather than its pore size, and no other listing in this group makes one | Not published. As with the maker’s Mini, flow on a squeeze system depends on the pressure applied rather than on the element alone | Up to 100,000 gallons — stated, about 378,500 liters, and reusable and easy to clean. The joint longest life on this shelf with the maker’s own Mini, seventy times the next longest |
| Practical Survival PS12, 5-pack | $80 | 0.1 micron — stated, in the context of removing the smallest microplastics found in the environment down to that figure. Over 99.99 per cent of bacteria including E. coli and legionella and over 99.99 per cent of parasites including giardia and cryptosporidium are published | Not named. The listing describes high-level filtration and a removal profile consistent with a hollow-fiber membrane, and names no fiber, stage count or medium. BPA-free and FDA-compliant construction is stated | Not published. As with the other straws on this shelf, flow is whatever the user produces | Up to 1,800 gallons each — stated, about 6,800 liters, with five filters supplied for about 34,000 liters in total, and described as up to 10 years of drinking water for the average person. Per filter it is the second longest life in this group after the two Sawyers |
| LifeStraw Personal, 2-pack | $32 | Not published for the membrane. The listing gives two other micron figures instead: microplastics removed down to 1 micron, and turbidity reduced down to 0.2 microns. Neither is a pore size, and this is the only listing in this group that publishes removal rates without publishing a rating | A microfiltration membrane — named as such, with no fiber type, stage count or material given. It is a hollow-fiber class element by its removal profile, and the listing does not say so | Not published. On a straw the flow is whatever your lungs produce, which is why the figure is absent here and on the other two straw filters on this shelf | 4,000 liters, given also as 1,000 gallons, per filter — stated with the qualifier of proper use and maintenance, and described in the maker’s text as up to 5 years of drinking water. Mid-range on this shelf, where lives run from 200 liters to a stated 378,500 |
Group use at a vehicle camp, where pumping by hand for twenty liters is the thing you want to avoid
Amazon reports what buyers took in the month before this page was last checked: at least 200.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for camping and hiking gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Press filter bottle · 500 ml · 0.2 micron stated · hollow fiber with carbon · 1500 liter 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.
Press bottle · 710 ml · 250 liter replaceable cartridge · no pore size published
A 710 ml press bottle with a replaceable cartridge rated at 250 liters, 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.
0.2 micron glass fiber · 1 liter per minute stated · 1,150 liters, the shortest life among the American filters here · 11.2 oz · hand pump with pre-filter and quick-connect fittings · transparent body · activated carbon granules
The only hand pump in this group, with a transparent body so you can see the cartridge load — and the shortest cartridge life on this shelf at the highest price in it.
Best for: Shallow or silty water, where a pump and a pre-filter work and a squeeze bag will not
≈ $100
