Top 10 Membrane Water Filter Replacement Filters – Replacement Under-Sink Water Filters

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1. APEC Water Systems


APEC Water Systems FILTER-MAX-ES50 50 GPD High Capacity Complete Replacement Filter Set For Essence Series Reverse Osmosis Water Filter System Stage 1-5

APEC Water Systems #ad - 1st stage 5 micron sediment filter to remove dust, particles and rust. 5th stage standard capacity coconut shell carbon filter removes any last residuals. 4th stage high rejection tfc reverse osmosis membrane removes a wide range of contaminants. Apec roes-50 complete replacement filter set, compatible with most 10" standard under the counter reverse osmosis water systems. 2nd and 3rd stage 10 micron extruded carbon block filter to remove chlorine, taste and odor.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height6 Inches
Length12 Inches
Weight3.5 Pounds
Width10 Inches
Part NumberFILTER-MAX-ES50

2. Membrane Solutions


Membrane Solutions Reverse Osmosis Membrane 50 GPD 11.75"x1.75" RO Membrane Water Filter Replacement Fits Under Sink RO Drinking Water Purifier System 1-Pack

Membrane Solutions #ad - Healthy drinking: 50 gpd ro membrane with a high 97% stabilized salt rejection rate. Long-life: the membrane element, shipped dry in an original sealed package, based on average feedwater quality, has a life expectancy between 24 to 36 months, temperature, and incoming water pressure.

Have a concern or question? American based customer support is available for the life of the product. Suitable for most Reverse Osmosis Water Filtration System. Welcome to the Membrane Solutions Family. On-demand support: assistance is available from our experts, ready to answer any of your questions about your RO membrane. Wide compatibility: reverse osmosis water filter replacement for standard membranes including but not limited to apec mem-es-50, GE FX12M, AXEON TF-1812-50, Dow Filmtec TW30-1812-50, Express Water FLTMEME50, FS TFC TFC-1812-50, aquatic Life 330084, iSpring MC5.

Hundreds of impurities are reduced by over 99% through the 00001-micron tfc membrane layer, lead, including heavy metals fluoride, organic materials, and harmful minerals, calcium, and nitrates, colloids, chromium, magnesium, including other soluble salts found in water resources. Universal membrane size: industry-standard element size 11. 75 x 1. 75-inch, designed to fit in standard 1812/2012 residential-style RO membrane housings utilizing a 2-inch internal diameter.
BrandMembrane Solutions #ad
ManufacturerMembrane Solutions Corp #ad
Height11.75 Inches
Length1.75 Inches
Weight0.45 Pounds
Width1.75 Inches
Part NumberMSRS001



FLTMEME50 – Reverse Osmosis Membrane – RO Membrane 50 GPD Water Filter Replacement – Under Sink and Reverse Osmosis System, Express Water

EXPRESS WATER #ad - Replacement ro membrane: express Water RO membranes are made with the highest quality materials for long-lasting filtration and value. On demand support: support from experts who can answer any of your questions about your replacement reverse osmosis membranes.

Reverse osmosis membrane: high density graded RO membrane ensures even the smallest of impurities from your drinking water including heavy metals, fluoride, TDS, arsenic, and more. Ro membrane replacement: each express water replacement RO membrane is specially designed for quick and easy replacement. Reverse osmosis membrane replacement: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99. 99% impurities. Get the cleanest water and the best value in your reverse osmosis water filter.
ManufacturerExpress Water #ad
Height2 Inches
Length12 Inches
Weight0.4 Pounds
Width2 Inches
Part NumberFLTMEME50

4. LifeStraw


PFAS and 30+ contaminants, microplastics, LifeStraw Home – Replacement Membrane Microfilter with Bonus Carbon​ Filter for Protection Against Bacteria, parasites

LifeStraw #ad - Improves taste and avoids the need to buy single use plastic bottled water. The only water filters that removes bacteria and parasites, in addition to microplastics. Compatible with all LifeStraw Home water filter pitchers and dispensers.

Your purchase has impact: one product, one child, one year of safe water. Retains essential minerals like magnesium and potassium that are good for your health. Reduces lead, mercury, herbicides, chlorine, sand, dirt, pesticides, and chemicals including PFAS “forever chemicals”, and cloudiness. Lifestraw is proud to be a b corp and Climate Neutral Certified brand, committed to meeting the highest standards of verified social and environmental performance, transparency and accountability.

The membrane microfilter lasts 264 gallons 1 year with regular use. Filtration that actually does stuff. The activated carbon + ion exchange filter lasts up to 40 gallons 2 months with regular use.
BrandLifeStraw #ad
ManufacturerLifeStraw #ad
Height4.5 Inches
Length2.38 Inches
Width2.38 Inches
Part NumberLSH7SPRF01
Warranty1 Year



ACB, PAC Filters, Carbon GAC, Sediment SED Filters – 10 inch Size Water Filters, Express Water – 3 Year Reverse Osmosis System Replacement Filter Set – 23 Filters with 50 GPD RO Membrane

EXPRESS WATER #ad - Replacement water filter life cycle: replace sediment filter, Granular Activated Carbon, Activated Carbon Block every 6 Months. On demand support: support from experts who can answer any of your questions about your replacement water filters. Sediment water filter: keep the most damaging sediments out of your drinking water and protect your other filters from coarse contaminants including rust, sand, dirt and silt.

Reverse osmosis filter replacement set: each Express Water replacement filter is specially designed to work together and compliment each other. Pre-carbon filter: activated carbon Block and Granular Activated Carbon block water filters protect your system from chlorine damage and remove volatile organic chemicals. Reverse osmosis replacement water filters: Experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99.

99% contaminants. All water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink. Water purification system: drink the healthiest water on Earth. Get the cleanest water and the best value in your filtration. Fully ¼” quick connect compatible. Post-carbon water filter: as the final stage of filtration in your system, this activated carbon water filter removes any remaining contaminants while enhancing the flavor of drinking water.
ManufacturerExpress Water Incorporated #ad
Weight19.11 Pounds
Part NumberFLTSETS6C6G6I3M502

6. Brondell


Brondell H2O+ Circle RO Membrane Replacement Filter

Brondell #ad - Extended ro membrane life – automatic filter flushing significantly extends the life of the RO membrane to 2 years. Quick change filters - twist and seal filters make filter replacement a breeze. Replaceable ro membrane filter for the Brondell Circle reverse Osmosis system. Replacement filter RF-40 RO Membrane. Gold seal certified by WQA Water Quality Association for trusted performance.
BrandBrondell #ad
ManufacturerBrondell #ad
Height11.25 Inches
Length2.75 Inches
Weight1.2 Pounds
Width2.75 Inches
Part NumberRF-40

7. Membrane Solutions


6 Pack, Membrane Solutions 5 Micron 10"x2.5" String Wound Whole House Water Filter Replacement Cartridge Universal Sediment Filters for Well Water

Membrane Solutions #ad - Long-life filter: our high dirt-loading capacity sediment filters can last up to 20, 000 gallons. Multiple advantages: this string-wound sediment water filter has foUR times the dirt holding capacity and DOUBLE the flow rate of PP sediment filter, allowing for longer service life. Replace the filter at least every six months to maintain performance.

It's the ideal solution if your feed-water is of low quality and contains a lot of sediment. Non-toxic, safe water-filtering experience. This wpp filter is tested and certified by NSF International against NSF/ANSI Standard 42 for material requirements only. Higher dirt-holding capacity: the string wound filter has a deep graded honeycomb structure, catching larger particulates first and then smaller near the center core, forming an effective depth filtration filter, dense near the inside core and more open and sparse near the outside edge, effectively increasing the dirt holding capacity of the filter.

Standard universal size: 5-micron 10 x 2. 5-inch universal filter cartridge size, fits most 10-inch filter housings. Protect water equipment: this filter removes up to 99% of sediment, pipes, including rusts, and other undissolved particulates from feedwater. As the first-stage filter in the whole house filtration system, silt, it protects your post-filters, and kitchen faucets and shower fittings from clogging, sand, water appliances, bathroom, providing a healthier filtered water supply for your home. The filtered capacity and change-out cycle depends on the inlet water quality.
BrandMembrane Solutions #ad
ManufacturerMembrane Solutions #ad
Height2.5 Inches
Length10 Inches
Weight0.36 Pounds
Width2.5 Inches



APPLIED MEMBRANES INC. 50 GPD Reverse Osmosis Membrane | RO Membrane Water Filter Replacement for Reverse Osmosis Water Filtration System | 1.8” x 12” Universal Compatibility | Made in USA

APPLIED MEMBRANES INC. #ad - The highest standard – ami membranes are manufactured in our vista, CA ISO 9001: 2015 facility to meet or exceed NSF / ANSI 58 standards. Post-sale support – ami has been manufacturing ro membranes since 1983 and is the largest USA manufacturer of residential membrane elements.

All ami membranes are backed by a lifetime customer service pledge. Universal fit - 50gpd ro membrane fits all standard 1812/2012 2” Inner Diameter ID membrane housing and is compatible with almost all under-sink RO systems. The purest water – removes up to 99% of total dissolved solids. We are here to help! ultra efficient – ami membranes utilize spiral Wound design to maximize membrane contaminant rejection down to.

0001 micron, maximize pure water production, and minimize wastewater. Certified to nsf/ansi 58 for material safety and for the reduction of Arsenic, Chromium Hexavalent, Lead, Chromium Trivalent, Cadmium, Fluoride, Selenium, Radium 226/228, Turbidity, Barium, Copper, and TDS.
ManufacturerApplied Membranes, Inc. #ad
Height2 Inches
Length12 Inches
Weight0.8 Pounds
Width2 Inches
Part NumberM-T1812A50

9. APEC Water Systems


APEC Water Systems FILTER-MAX90 US Made 90 GPD Complete Replacement Set for Ultimate Series Reverse Osmosis Water Filter Standard 1/4" Output System, 5 Piece, White

APEC Water Systems #ad - Includes 1 sediment 2 carbon block filters, 1 Dow Filmtec membrane and 1 inline carbon filter. Apec ultimate high capacity 5-stage complete filter set is USA made and designed to last 2X longer. Filmtec 90 gpd membrane is individually lab tested to the highest rejection rate. 5 inch filter housings. Certified to remove up to 99% of all contaminants for the best Drinking water quality possible. Compatible with apec ro-90, ro-perm and most industry standard reverse osmosis system with 10 inch x 2.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height6 Inches
Length12 Inches
Weight3.5 Pounds
Width10 Inches
Part NumberFILTER-MAX90

10. iSpring


White, Without Membrane, iSpring F9K 1-Year Reverse Osmosis Water Filter Replacement Cartridge Pack Set for 6-Stage Alkaline Mineral RO Filtration Systems

iSpring #ad - Updated fa15 alkaline mineral filters and FT15 post-carbon filters are built with a secure push-fit quick connection, which allows faster filter replacement. 5" replacement water filters included: 2x sediment filters, 2x granular activated carbon filters, 1x post-carbon filter, 2x carbon block filters, and 2x alkaline filters.

This filter pack does not include an ro membrane. Individually wrapped 1-year high capacity filter replacement cartridge pack for 6-stage RO systems. Experience clean, and good-tasting water every time you turn on the faucet. Enjoy crystal clear ice cubes, safe, better tasting foods, fresher tea and coffee, healthier baby formula – even better than most bottled water.9

9 pieces of 10" x 2. If you have trouble installing the filters, please refer to the user manual or contact us. Alkaline mineral filter produces alkaline water with restored healthy minerals such as natural calcium, magnesium, and potassium ions, which ph-balances the RO water.
BrandiSpring #ad
ManufactureriSpring #ad
Height10 Inches
Length3 Inches
Weight5.95 Pounds
Width3 Inches
Part NumberF9K