Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

LOW PRICES and FAST SHIPPING SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

Water Factory SQC2 HF 3M Water Filters

Water Factory SQC2 HF 3M Water Filters

Water Factory SQC2 HF 3M CUNO Reverse Osmosis System, Replacement Water Filters, RO Membrane and Maintenance Repair Parts

Water Factory CUNO SQC-2 HF Installation and Owner's Manual

3M Water Filter Distributor

  1. Pro Products Sani System Sanitizer
    Pro Products Sani System Sanitizer
    Pro Products Sani System Sanitizer. 0.25 or 0.5 fl. oz. concentrate. Sani-System ® Pro Products is proud to introduce Sani-System, the first and only EPA product approved for sanitizing water softeners, RO units and Water Coolers. Sani System is proven to kill 99.9% of E. coli, E. coli O157:H7, Staphylococcus aureus, Listeria monocytogenes and other harmful bacteria. It does not use chlorine, other oxidizers or acids that can harm water softener equipment parts. Use is simple; each dose comes in a pre-measured pouch. Just cut, pour and regenerate softener. No measuring, No mess! Sanitizing Equipment! Applications Interior Surfaces of Water Softeners, Reverse Osmosis (RO) Units, Ice Machines, Water Coolers, Water Holding Tanks and Pressure Tanks. Sani-System is now NSF certified! This is the best sanitizing solution available anywhere! Stock up and save. Learn More
    $7.99 Special Price $4.99 As low as $2.49
  2. Air Pressure Gauge for Reverse Osmosis Water Accumulator Tanks -1000
    Air pressure gauge for reverse osmosis water accumulator tanks
    Air pressure gauge for reverse osmosis water accumulator tanks - Specially calibrated for reverse osmosis system tanks. Scale from 1 to 20 PSI. Large scale reading over small PSI range allows optimum accuracy. Just like car tires lose air pressure, so does the bladder of your reverse osmosis water accumulator tank. Improper tank air pressure will cause your system to operate improperly. This is a must for all reverse osmosis system owners. Learn More
    $24.99 Special Price $17.99 As low as $12.99
  3. HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester
    HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester
    HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout. HM Digital introduces its new AquaPro series, a line of handheld TDS/EC meters with a sleek design that's perfect for today's modern kitchen. The AquaPro digital water testers are the next generation for today's tech-savvy and health-conscience consumer. Learn More
    $42.95 Special Price $29.99 As low as $20.00
  4.  Inversion Tank Stand Reverse Osmosis System
    Inversion Tank Stand Reverse Osmosis System
    Protect the bladder of your tank by using our tank inversion stand. Most tanks hold the water in the top portion of the tank instead of the bottom. Storing the water on top of the bladder adds the weight of the water to the pressure to cause unnecessary stress on the bladder. By inverting (turning upside down) it removes the weight of the water on the seal where the bladder is attached to the inside of the tank. Fits most standard 3 and 4 gallon tanks. Plastic Inversion RO Tank Stand. UPC #850901003408 Learn More
    $27.99 Special Price $17.99
  5. JOHN GUEST- PPSV040808W- In-Line Shut-Off Valve- 1/4''- 1000
    John_Guest_shut-off-valve (John Guest PPSV040808W In-Line Shut-Off Valve 1/4" Tub...
    John Guest PPSV040808W In-Line Shut-Off Valve 1/4" Tube X 1/4" Tube Learn More
    $9.99
  6. GGN-Faucet-AG-P-Chrome Air Gap Faucet-Long Reach-1000
    $39.99 Special Price $29.99
  7. JOHN GUEST- Poly Tube 1/4'' PE White - Replacement Tubing for Water Filter Systems- 1000
    Poly Tube John Guest 1/4" PE White Replacement Tubing for Water Filter Systems. PE-16-GI-0250F-N - Poly Tubing
    Poly Tube John Guest 1/4" PE White Replacement Tubing for Water Filter Systems. PE-16-GI-0250F-N - Poly Tubing. Sold by the foot. Learn More
    $0.30
  8. 4 Gallon Reverse Osmosis Tank GGN-Tank-4-Pro-3.2
    4 Gallon Reverse Osmosis Tank GGN-Tank-4-Pro-3.2
    GGN-Tank-4 - 4 Gallon RO Reverse Osmosis Tank 1/4" NPT Threads. Stainless Steel connector. This is the perfect replacement tank for most residential RO Reverse Osmosis systems. Set Air Pre Charge To 7 psi With The Tank Empty Blue color. UPC #850901003491 Learn More
    $79.99 Special Price $49.99
  9. 3M  6-in-1 Water Test Kit -Simple to Use - DIY In Home Water Quality Test Kit
    3M 6-in-1 Water Test Kit -Simple to Use - DIY In Home Water Quality Test Kit
    6 in 1 Home Water Test Kit by 3M. Use this 3M DIY water quality test for convenient on-site testing. The 3M DIY water quality test kit provides quick analysis. Learn More
    $15.75 Special Price $12.99
  10. 3M AP1-E  47-234825 SQC Sanitizing & Service Cartridge
    3M AP1-E 47-234825 SQC Sanitizing & Service Cartridge

    3M47-234825 SQC Sanitizing Service Reusable Cartridge. AP1-E 3M Service Cartridge for SQC drinking water systems by Water Factory, CUNO and 3M

    Learn More
    $38.86 Special Price $29.95 As low as $24.95
  11. 3M 50-1265 RO Sanitizing & Service Plug SQC RO Systems
    3M 50-1265 RO Sanitizing & Service Plug SQC RO Systems
    3M 50-1265 RO Service & Sanitizing Plug for 3MRO301, 3MRO401 and 3MRO501 Reverse Osmosis Drinking Water Systems from 3M or any of the Water Factory SQC systems such as the SQC3, SQC4-HF, SQC2 or SQC1. Use these bypass plugs in place of filters during the sanitizing of your RO system. This is must for all SQC reverse osmosis system owners. Order one for each filter in your system. Learn More
    $19.69 Special Price $15.99 As low as $11.95
  12. 3MRO301 3 Stage Reverse Osmosis System
    3MRO301 3 Stage Reverse Osmosis System
    3MRO301 Reverse Osmosis System #04-04506 This Reverse Osmosis (RO) system with advanced three stage filtration process includes a Sediment/Carbon Pre Filter, a Carbon Block Filtration Post Filter, and a Reverse Osmosis. Included in the package: RO system with 3 filter cartridges, faucet, tank, tubing, fittings, installation manuel and performance data sheet Learn More
    $489.00 Special Price $399.99 As low as $379.00
  13. 3MROM413 SQC Reverse Osmosis Membrane by 3M
    3MROM413 SQC Reverse Osmosis Membrane by 3M
    3MROM413 Supersedes Water Factory 66-4706G2 SQC Reverse Osmosis Membrane. Reduces: Particulate, chlorine taste and odor and lead Sanitary Quick Change (SQC) cartridge design helps provide fast and easy cartridge change-out Slim profile, space saving design reduces overall under cabinet footprint Advanced multi-stage reverse osmosis water filtration process helps provide cleaner, better tasting drinking water through a dedicated faucet Learn More
    $229.99 Special Price $159.99 As low as $149.99
  14. 3M 3MROP310 - Sediment Prefilter for 3MRO301 Reverse Osmosis System - Replaces 47-9290G2
    3M 3MROP310 - Sediment Prefilter for 3MRO301 Reverse Osmosis System - Replaces 47-9290G2
    3M 3MROP310 - Sediment Prefilter for 3MRO301 Reverse Osmosis System - Replaces 47-9290G2 The 3M Aqua-Pure 3MROP310 under sink reverse osmosis carbon pre-filter (part #47-9290G2) is a replacement filter cartridge for the 3M Aqua-Pure 3MRO301 under sink reverse osmosis system using the sanitary quick change functionality. Learn More
    $49.96 Special Price $27.95 As low as $24.99
  15. 3MROP316 SQC Carbon Filter for 3MRO301 Reverse Osmosis System and CUNO Water Factory SQC3 HF RO System
    3MROP316 SQC Carbon Filter for 3MRO301 Reverse Osmosis System and CUNO Water Factory SQC3 HF RO System
    3MROP316 SQC Carbon Filter for 3MRO301 Reverse Osmosis System and CUNO Water Factory SQC3 HF RO System The 3M Aqua-Pure 3MROP316 under sink reverse osmosis filter is a replacement filter cartridge for the 3M Aqua-Pure 3MRO301 under sink reverse osmosis system. Reverse Osmosis Post Carbon Block Filter Filter for 3MRO301 Helps provide cleaner and better tasting water Learn More
    $53.86 Special Price $39.95 As low as $34.99

Easy TDS Membrane Performence Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.

See our selection of TDS meters under Water Tests


Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.

* 3M ® is the registered trademark of 3M Inc. USA, the manufacturer of 3M ® Water Factory brand RO Reverse Osmosis, 3M Full Flow Systems, 3M Whole House Systems, 3M FaucetMate Under Sink Drinking Water Systems, 3M Dedicated Faucet Systems, CUNO CoolerMate, SQC2-HF Series Reverse Osmosis Systems and related drinking water treatment equipment.


3M Water Filter Distributor