What the maker declares it reduces, and nothing more · review
FRIZZLIFE MK99 under-sink filter, 0.5 µm, NSF/ANSI 42 and 53, 7.57 l/min at 40 psi review
The only filter in this catalogue that publishes a flow rate with the pressure behind it, cites two NSF/ANSI standards, and states in its own listing what it does not do.
The bottom line The best-evidenced filter in the catalogue: a certified standard, a flow with its pressure, and a plain statement of what it does not do. Its cartridge life is published twice, differently.
What you are getting
A two-stage under-sink water filter at 0.5 micron, certified to NSF/ANSI 42 and 53, with 3/8 in direct-connect hoses and a 3/8 to 1/2 in converter, a twist-in cartridge with a shut-off valve in the cap, and a stated flow of over 7.57 l/min at 40 psi.
Three things this listing does that almost nothing else does
It publishes a flow with its pressure. “Over 7.57 l/min at 40 psi.” A flow rate without a pressure describes nothing, and only one other product in this entire catalogue — a bath thermostat — gets this right.
It cites named standards. NSF/ANSI 42 for taste, odour and particles; 53 for health-related contaminants. Those are protocols, not adjectives.
It states what it does not do. In its own bullet points: the anti-scale technology does not lower TDS. A manufacturer volunteering a limitation is rare enough to be worth the purchase on its own.
The shut-off in the cap
The cartridge cap contains its own isolating valve, so changing the filter does not mean crawling into the cupboard to turn the water off first. That is the difference between a five-minute job and an evening.
The number published twice
The listing states the cartridge can be used for two years and, in the same paragraph, recommends replacing it after six to eight months.
Both are the maker’s. This page reports both rather than quoting the longer one. Budget on six to eight months.
What it needs from you
A cupboard, a cold water connection and a proper installation. The tap-mounted filter in this hub needs none of those and holds a fraction as much.
Availability
On sale from 58 € to 86 € on the German, French, Italian and Spanish Amazon stores at the time of checking.
Also on sale on the British Amazon store, in the local currency: the range above is measured on the euro stores only.
Not found on the American Amazon store, where the buy link falls back to a local search rather than to a page that does not exist.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 5 September 2026. The live price is at the top of the page.
What we like, and what we don't
Strengths
Publishes a flow rate WITH its pressure — over 7.57 l/min at 40 psi — which nothing else in this hub does
Cites NSF/ANSI 42 and 53, and states outright that the anti-scale technology does not reduce TDS
The cap carries its own shut-off valve, so the cartridge changes without turning the water off
Compromises
The listing gives two different cartridge lives — two years, and a recommended six to eight months
It needs a cupboard, a cold water connection and a proper installation, unlike the tap-mounted filter here
No footprint or dimensions published for a unit that has to fit under a sink
Specifications
Filter type
Two-stage under-sink filter at 0.5 micron, with an anti-scale technology the maker states does NOT reduce TDS
Stated capacity
The maker states a cartridge usable for two years, and separately recommends replacement after six to eight months — both figures are published
Declared reductions
The maker states over 99.99 % of contaminants removed while retaining minerals, naming lead, heavy metals, chlorine, chromium 6, mercury, rust, volatile organic compounds, turbidity, odour and taste
Connection size
3/8 in direct-connect hoses supplied, with a 3/8 in to 1/2 in converter — stated as fitting standard European under-sink valves
Stated flow rate
Over 7.57 litres per minute at 40 psi — stated, with the reference pressure
Cartridge
Only the core is replaced, not the housing; twist-in change in under three minutes, with a shut-off valve built into the cap — stated
Amazon reference
B0FQ555ZLJ (same reference on 5 Amazon marketplaces)
EAN
0850073755570
Questions people actually ask
What do NSF/ANSI 42 and 53 cover?
42 covers aesthetic effects — taste, odour, chlorine, particles. 53 covers health effects — lead, cysts, VOCs and similar. Citing both means the claims were tested against defined protocols rather than asserted, and it is what separates this from a long bullet-point list.
Two years or six to eight months?
The listing says both: the cartridge can be used for two years, and the maker recommends replacing it after six to eight months for better filtration. Those are two different numbers for the same part, and this page reports both rather than picking the flattering one. Budget on the recommendation.
Reverse osmosis · seven stages · 75 GPD membrane, up to 270 litres a day · separation to 0.0001 µm stated · 12-litre storage tank · remineralisation with calcium and magnesium · improved waste ratio, unquantified
The only reverse osmosis system here — the one technology that genuinely lowers TDS — with a remineralisation stage to put minerals back afterwards.
Best for: A household that wants dissolved solids genuinely reduced, with cupboard room for a tank and a tolerance for waste water.
Inline filter · three stages: 0.5 µm sediment, carbon block, limescale crystallisation stable to 200 °C · up to 3 500 litres or about 6 months · fits between the cold line and your existing tap · only the medium is replaced
An inline filter that needs no second tap and no new hole in the worktop — it goes between your cold supply and the tap you already have.
Best for: A kitchen where limescale on the kettle and the coffee machine is the problem, and where a second tap is not an option.
Tap filter · coconut-shell carbon block with anti-limescale granulate · 4 µm fineness · up to 3 000 litres or 4 months · M22 male / M24 female with adapters · diverter lever in stainless
The only filter here that screws onto the tap itself rather than living under the sink — with a stainless diverter lever and a published 4 µm fineness.
Best for: A rented flat, or a kitchen with no cupboard space under the sink, where the filter has to come with you.
