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.

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Coralife Pure-Flo II Water Filters ®

Coralife Pure-Flo II ® compatible replacement water filters and RO reverse osmosis membranes

* Coralife Pure Flo II ® # 76010  compatible replacement 1 micron sediment pre filter
for CL RO 24 TFC (76000)
CL RO 50 TFC (76001)
CL RO DI 50 TFC (76002 & 76003)
CL RO DI 100 TFC (76004)
CTA 22 RO Systems

* Coralife Pure Flo II ® # 76012  compatible replacement 10 micron carbon block filter
for CL RO 24 TFC (76000)
CL RO 50 TFC (76001)
CL RO DI 50 TFC (76002 & 76003)
CL RO DI 100 TFC (76004)  RO Systems


* Coralife Pure Flo II ® # 76009  compatible replacement DI Deionization filter
STEP UP TO LAB QUALITY
fits CL RO DI 50 TFC (76002 & 76003)
CL RO DI 100 TFC (76004)  RO Systems
76008 DI Housing


* Coralife Pure Flo II ® # 76011  compatible replacement 10" GAC carbon filter for CL RO DI 100 TFC (76004)  RO Systems


* Coralife Pure Flo II ® # CL RO 22 GPD RO System compatible replacement CTA reverse osmosis membrane (CTA16)


* Coralife Pure Flo II ® #76020 TFC  24 GPD TFC RO System compatible replacement reverse osmosis membrane


* Coralife Pure Flo II ® #76021 TFC  50 GPD TFC RO System compatible replacement reverse osmosis membrane


* Coralife Pure Flo II ® #76022 TFC  100 GPD TFC RO System compatible replacement reverse osmosis membrane


* Coralife Pure Flo II ® compatible replacement o-rings and Dow 111 silicone sealant


* Coralife Pure Flo II ® compatible filter wrench for stubborn filter housings

  1. PENTEK- #151121- Slim-Line Water Filter Housing Replacement - 1000
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Slim Line Water Filter Housing. Buna-N FDA Grade. (Slim Line Housings Use A 3 1/2" diameter "O" Ring) Ametek # 151121 Same as Culligan OR-38 O-ring. Learn More
    $5.69 Special Price $4.99 As low as $3.00
  2. Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench
    Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek SW-1 # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. SW-1 Water Filter Housing Wrench. Fits 4" Slim Line Housings. (Slim Line Housings Have A 3 1/2" diameter "O" Ring) Ametek # 150294 Only for use in loosening filter housings, never to tighten. Overtightening may cause damage to the O-rings and make re-opening VERY difficult. Hand tighten only. Fits most standard style RO systems. Replaces 150294. For really stubborn filter housings our technicians will use two wrenches together for maximum power where one wrench might break or not do the job. Our techs know the tricks. Order New O-rings And Be Sure To Lube Them With Dow 111 Silicone Sealant To Prevent Leaks Learn More
    $9.99 Special Price $6.99 As low as $4.99
  3. 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
  4. TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Test For Total Dissolved Solids In Water - Reverse Osmosis Membrane Tester - TDS Meter
    TDS Meter - Tester. The Only Way To Know If Your Reverse Osmosis RO Membrane Is Performing Correctly - Tests for TDS - Total Dissolved Solids. A Must For All RO System Owners. Compare Incoming Feed Water To Treated Water - Replace Membrane If Less Than 80% of TDS Is Being Removed - The lower the TDS level in the water, the more efficiently your body's cells actually get hydrated by the water that you drink. The higher the TDS levels in the water, the greater the probability of harmful contaminants that can pose health risks or hinder the absorption of water molecules on the cellular level. Simple to use for Reverse Osmosis membrane monitoring. We really like this tester and think that anyone who wants to know about the quality of their water should have one of these TDS Meter Testers to monitor their RO membrane. Learn More
    $49.99 Special Price $37.99 As low as $17.99
  5. TDS Meter Inline Water Tester DM1 - HM Digital Dual Mode Reading
    TDS Meter Inline Tester- Dual Mode Reading - Easily Installs Inline - Very Simple To Use
    TDS Meter - Dual Mode - Installs Inline - Check the TDS level with the push of a button. Now you can easily check to make sure the water from your reverse osmosis system is top quality. Measure the tap water coming in vs. the purified water going out of your system at any time. Very easy installation. FEATURES Displays TDS levels of the feed water and product water with in & out electrode probes. Highly efficient and accurate due to its advanced microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use. Comes equipped with John Guest Quick-Connect T-fittings as shown. Installs quickly and easily. SPECIFICATIONS Range: 0-9990 ppm Accuracy: ±2% Always know if your RO membrane is performing correctly! Learn More
    $49.99 Special Price $39.99 As low as $19.99
  6. DOW FILMTEC -  TW30-1812-50 RO Reverse Osmosis Membrane #80722-1000
    Dow Filmtec ® TW30-1812-50 RO reverse osmosis membrane # 80722
    Dow Filmtec ® TW30-1812-50 TFC 50 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80722 Learn How To Upgrade Your Reverse Osmosis Membrane Capacity Learn More
    $84.99 Special Price $69.99 As low as $54.99
  7. Desal ® CTA-16 RO reverse osmosis membrane # 1201332 GE Osmonics Pentair
    Desal ® CTA-16 RO reverse osmosis membrane # 1201332 GE Osmonics

    Desal ® CTA-16 GE Osmonics - 16 GPD (gallons per day) CTA reverse osmosis membrane - standard size. # 1201332 - 1224433

    Learn More
    $69.99 Special Price $49.99 As low as $35.99
  8. Molykote-From DOw Corning- 111 Compound-6 Gram O-ring Silicone Lubricant & Sealant-Dow-111-5-gram-1000
    Dow Corning (Molykote) ® 111 6 gram O-ring Silicone Lubricant and Sealant - Be sure to lube your O-rings to help prevent leaks.
    Dow Corning/Molykote ® 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

    Dow 111 Silicone MSDS Safety Sheet

    Learn More
    $5.99 Special Price $3.99 As low as $1.79
  9. DOW FILMTEC - TW30-1812-100 HR RO Reverse Osmosis Membrane 170102- 1000
    Dow Filmtec ® TW30-1812-100 HR RO reverse osmosis membrane
    Dow Filmtec ® TFC 100 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Extra fast recovery and high production flow rate.

    Learn How To Upgrade Your Reverse Osmosis Membrane Capacity

    Learn More
    $129.99 Special Price $84.99 As low as $59.99
  10. DOW FILMTEC TW30-1812-24 RO #93430 Reverse Osmosis Membrane- 1000
    Dow Filmtec ® TW30-1812-24 RO reverse osmosis membrane # 93430

    Dow Filmtec ® TW30-1812-24 24 GPD TFC RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 93430

    Learn More
    $89.99 Special Price $56.99 As low as $37.99
  11. Garden Hose Adaptor- To Connect Water Filtration System- 1000
    Garden Hose Adaptor To Connect Water Filtration System
    Garden Hose Adaptor #NC2098 To Connect Water Filtration System - Connects standard garden hose faucet to a 1/4" John Guest ® Quick Connector. Makes it simple to connect a 1/4" tube to a garden hose faucet. Especially useful for aquraium and plant maintenance. Learn More
    $12.99 Special Price $8.99 As low as $6.99
  12. Hanna ® pH 7.01 Buffer Solution HI7007M
    Hanna ® pH 7.01 Buffer Solution HI7007M
    Hanna ® pH 7.01 Buffer Solution HI7007M used to calibrate meters. Hanna pH buffers are made of Potassium Dihydrogen Phosphate and Disodium Hydrogen Phosphate and are standardized with a pH meter that is calibrated to NIST primary standard buffer solutions (NIST 186Ie & 186IIe and NIST 158g S.R.M.). 230 ml bottle. Learn More
    $23.99 Special Price $13.99 As low as $11.99
  13. Hanna ® HI70300M Storage Solution For pH & Orp Electrodes For Water Testing
    Hanna ® HI70300M Storage Solution For pH & Orp Electrodes
    Hanna ® HI70300M Storage Solution For pH & Orp Electrodes. 230 ml bottle. Hanna storage solutions are prepared with high grade Potassium Chloride and Potassium Hydrogen Phthalate by titration with NIST 2201 standardized Silver Nitrate and NIST 84j standardized Sodium Hydroxide Solution, respectively. Learn More
    $24.99 Special Price $13.99 As low as $11.99
  14. WATERPROOF EC / TDS / TEMP COMBO METER / PROFESSIONAL TESTER - HM Digital COM-100
    WATERPROOF EC / TDS / TEMP COMBO METER / PROFESSIONAL TESTER - HM Digital COM-100
    FOR THE PROFESSIONAL ! ------ COMBO METER / TESTER FOR EC / TDS / TEMP - WATERPROOF. The only handheld TDS meter / EC meter with full scale digital calibration. A water tester that is perfect for both consumer or commercial use. Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. Learn More
    $76.95 Special Price $59.99 As low as $47.99
  15. HM Digital PH-200 Waterproof Ph Water Testing Meter With Temperature
    HM Digital PH-200 Waterproof Ph Meter With Temperature
    Incredibly accurate! A pH tester that is perfect for both consumer or commercial use. Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more. Measures pH and Temperature. Auto-ranging three point calibration with digital fine tuning Includes 4 pH buffer solution in a sponge embedded in a clear cap, so you can see if it's dried up. Waterproof housing. Simultaneous temperature display. Measurement Range: 0-14 pH. Digital Calibration (push button). Auto-off function, data-hold function and low-battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading. Factory Calibrated: The PH-200 meter is three-point factory calibrated to 4, 7, and 10 pH. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. Includes a cap, batteries, and lanyard. pH Range: 0 - 14 Temperature Range: 0-80 °C; 32-176 °F Resolution: 0.01 pH; Temperature resolution is 0.1 °C/F Accuracy: +/- .02% Calibration: Digital calibration by push button. Electrode: Replaceable glass sensor and reference tube electrodes Housing: Waterproof (submersible; floats) Power source: 3 x 1.5V button cell batteries (included) Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) Weight without case: 96.4 g (3.4 oz) .

    SP-P2 Preplacement Sensors

    Ph Meter Buffer Solution

    Ph Meter Storage Solution

    Learn More
    $119.99 Special Price $84.99 As low as $69.99
  16. John Guest inline water shut off valve
    John Guest ® inline shut off valve
    John Guest ® inline shut off valve - Easy to install push in quick connectors. PPSV040808W and PPSV041212W Learn More
    $17.99 Special Price $9.99 As low as $7.99
  17. GE Osmonics ® Purtrex PX-1-978 Sediment Water Filter # 93113
    GE Osmonics ® Purtrex PX-1-978 Sediment Water Filter # 93113
    GE Osmonics ® Purtrex PX-1-978 1 Micron Sediment Water Pre Filter. True-graded density pure polypropylene depth filter. #93113 9 7/8" long X 2 1/2" diameter. 40 per case, sold individually. Order a case and save even more. Learn More
    $9.99 Special Price $6.99 As low as $2.99
  18. Aquatec Permeate Pump ERP-1000 For RO Reverse Osmosis Drinking Water Systems
    Aquatec ® Permeate Pump ERP-1000
    Aquatec ® Permeate Pump - The Aquatec ERP-1000 permeate pump is a turbine pump that uses the pressure of the waste water to pump the product drinking water into the storage tank. This protects the membrane from the back flow pressure of the tank, maintaining maximum osmotic pressure at all times. Great for low pressure applications. • Increases product water purity • Increases pressure and flow to the faucet • Saves up to 3/4 of inlet water • Up to 30% more tank pressure • Faster tank refill recovery • Increases filter and membrane life • Requires no electricity • Mounting Clip Supplied. Order the optional auto shut off valve that triggers at 90 percent rather than the standard 66 percent of tank pressure versus incoming line pressure. While the permeate pump works fine with a standard 66 percent auto shut off valve, the 90 percent valve increases storage capacity of the tank and increases initial pressure from the faucet. Will not install on most manifold systems such as Hydtrotech and Water Factory. Learn More
    $99.99 Special Price $69.99 As low as $55.99
  19. Nitrate-Nitrite Water Tests - Bottle Of 50
    Nitrate-Nitrite Water Tests - Bottle Of 50
    Nitrate & Nitrite Water Tests - Bottle Of 50 Individual Home Tests - Quick Results. Use with ease in your own home. Test for pesticides and more. Find out what level of water quality is coming into your house. Very simple use and very fast results. Learn More
    $22.99 Special Price $15.99 As low as $12.99
  20. Pentek CBR2-10 # 155268 CBR210 Carbon Block Replacement Water Filter CMR-10
    Pentek CBR2-10 # 155268 CBR210 Carbon Block Replacement Water Filter CMR-10
    Pentek CBR2-10 # 155268 CBR210 Carbon Block Replacement Water Filter CMR-10 Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner and Many Other Brands. Carbon Block With Lead Reduction Half Micron Water Filter. (Green End Caps) 9 3/4" long X 2 7/8" diameter. 12 per case, sold individually. Ametek # 155268 Replaces Ametek CMR-10. The CBR2 series are multimedia cartridges designed to perform several functions. CBR2 Series cartridges are manufactured using a patented process and combine powdered activated carbon with a specially designed media for lead reduction. In addition to lead reduction, the unique formation of the carbon block enables it to reduce Cryptosporidium and Giardia cysts and fine sediment particles down to 0.5 microns. As with our standard CBC Series carbon block, both the CBR2-10 and CBR2-10R are more effective at reducing levels of chlorine, and certain VOC's than granular activated carbon cartridges. The Polypropylene outer wrap helps reduce coarse sediment particles, effectively extending the useful life of the cartridge. Order a case and save even more. Learn More
    $26.99 Special Price $19.99 As low as $14.99
  21. Pentek GAC-10 # 155109 GAC10 Taste & Odor Replacement Water Filter Cartridge
    Pentek GAC-10 # 155109 GAC10 Taste & Odor Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek GAC-10 # 155109 GAC10 Taste & Odor Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands Granular Activated Carbon Taste & Odor Water Filter. 9 3/4" long X 2 7/8" diameter. 12 per case, sold individually. Ametek # 155109 GAC Series cartridges effectively reduce unwanted tastes, odors and chlorine from your drinking water. They are designed to allow maximum contact between the water and carbon, ensuring maximum adsorption. The construction of the cartridge allows water to enter at one end and pass through the entire length of the cartridge, while an internal expansion pad minimizes channeling or bypass. Before the water exits the cartridge, a 20-micron post filter helps remove carbon fines and other suspended particles from the filtered water. Order a case and save even more. Learn More
    $14.99 Special Price $9.99 As low as $7.99
  22. Pentek PCF1-10MB # 155273 PCF110MB DI Deionization Replacement Water Filter Cartridge
    Pentek PCF1-10MB # 155273 PCF110MB Deionization Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek PCF1-10MB # 155273 PCF110MB Deionization Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands Deionization Water Filter. FDA D.I. Resin. 9 3/4" long X 2 7/8" diameter. 6 per case, sold individually. Ametek # 155273 PCF Series cartridges have been developed in response to the requirements for deionized water in many industries. They are manufactured using an FDA-compliant resin that has been subjected to additional post-production steps to minimize the total organic carbon (TOC) level. This high capacity, semi-conductor-grade resin cartridges are ideal for use in pharmaceutical and medical laboratories, cosmetics and circuit board printing applications. Order a case and save even more. Learn More
    $38.99 Special Price $29.99 As low as $24.99
  23. GOES GREEN - Premium  0.5 Micron- Carbon Block Filter- 1000
    Goes Green GGN-PB05-Block 0.5 Micron Premium Carbon Block.
    Goes Green 0.5 Micron Premium Extruded Carbon Block Water Filter provides optimal VOC reduction and high chemical adsorptive capacity. 9 3/4" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 25 per case, sold individually. Order a case and save even more. Learn More
    $24.99 Special Price $15.99 As low as $11.99

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.


* Coralife Pure Flo II ® is the registered trademark of Coralife Pure Flo, the manufacturer of Coralife Pure Flo II ® brand water treatment equipment.  The replacement filters and membranes listed above are not manufactured or endorsed by Coralife Pure Flo II.  Rather, these filters and membranes are manufactured by other companies.  While these filters and membranes are compatible for use in Coralife Pure Flo II ® AQPC-35 brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to Coralife Pure Flo II ® equipment.