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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Ultima Heavy Residential - Commercial 5 Stage Reverse Osmosis Replacement Water Filters

 

Ultima 20" Heavy Residential - Commercial ®* 5 Stage Reverse Osmosis System Compatible Replacement Water Filters, Reverse Osmosis Membranes, DIY Service Parts and HELP Guides

5 Stage Reverse Osmosis Water Purification System - 3 vertical water filter housings (20"), one top mounted horizontal inline GAC carbon post water filter and one top mounted reverse osmosis membrane housing. 

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  1. PENTEK-PD-25-20 - #155758 - Polydepth Sediment  Replacement Water Filter Cartridge- 2000
    Pentek PD-25-20 # 155758 PD25-20 Polydepth Sediment Replacement Water Filter Cartridge
    Pentek PD-25-20 # 155758 PD25-20 Polydepth Sediment Replacement Water Filter Cartridge Ametek / US Filter / Plymouth / Pentek / Culligan / Kleen Plus / American Plumber / Bruner / Many Other Brands Compatible PD-25-20 Polydepth 25 Micron Sediment Water Filter. 20" long X 2 1/2" diameter. 20 per case, sold individually. Ametek # 155758 The New POLYDEPTH™ filtration cartridge is constructed of quality polypropylene filter media to ensure high efficiency in the inner layer. The polypropylene filter media is thermally bonded and incorporates a rigid polypropylene center core for increased durability. This thermal bonded micro fiber construction offers no fiber release, consistent flow rate and superior filtration performance. It also produces a rigid cartridge that is less subject to collapse than any wound or pleated cartridge, yet is not brittle or prone to breakage problems common with resin-bonded cartridges. Also, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. Order a case and save even more.
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    $14.99 Special Price $9.99 As low as $7.99
  2. Pentek PD-10-20 # 155757 PD10-20 Polydepth Sediment Replacement Water Filter Cartridge
    Pentek PD-10-20 # 155757 PD10-20 Polydepth Sediment Replacement Water Filter Cartridge
    Pentek PD-10-20 # 155757 PD10-20 Polydepth Sediment Replacement Water Filter Cartridge Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands Polydepth 10 Micron Sediment Water Filter. 20" long X 2 1/2" diameter. 20 per case, sold individually. Ametek # 155757 The New POLYDEPTH™ filtration cartridge is constructed of quality polypropylene filter media to ensure high efficiency in the inner layer. The polypropylene filter media is thermally bonded and incorporates a rigid polypropylene center core for increased durability. This thermal bonded micro-fiber construction offers no fiber release, consistent flow rate and superior filtration performance. It also produces a rigid cartridge that is less subject to collapse than any wound or pleated cartridge, yet is not brittle or prone to breakage problems common with resin bonded cartridges. Also, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. Order a full case and save even more.
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    $13.99 Special Price $9.99 As low as $8.24
  3. Pentek P25-20 # 155226 P2520 Polydepth Sediment Replacement Water Filter Cartridge
    Pentek P25-20 # 155226 P2520 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek P25-20 # 155226 P2520 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands Spun Polypropylene 25 Micron Sediment Water Filter. 20" long X 2 1/2" diameter. 20 per case, sold individually. Ametek # 155226 P-Series cartridges are manufactured from 100% pure polypropylene fibers. The fibers have been carefully spun together to form a true gradient density from outer to inner surfaces. These cartridges are designed for purity. They will not impart taste, odor or color to the liquid being filtered when used within the recommended temperature limit. Also, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. The coreless strength of the cartridges is achieved by sintering the many fibers into a solid matrix. Order a case and save even more.
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    $12.99 Special Price $8.99 As low as $6.99
  4. Pentek PD-5-20 # 155756 PD5-20 Polydepth Sediment Replacement Water Filter Cartridges
    Pentek PD-5-20 # 155756 PD5-20 Polydepth Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek PD-5-20 # 155756 PD5-20 Polydepth Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. Polydepth 5 Micron Sediment Water Filter. 20" long X 2 1/2" diameter. 20 per case, sold individually. Ametek # 155756 The New POLYDEPTH ™ filtration cartridge is constructed of quality polypropylene filter media to ensure high efficiency in the inner layer. The polypropylene filter media is thermally bonded and incorporates a rigid polypropylene center core for increased durability. This thermal bonded micro-fiber construction offers no fiber release, consistent flow rate and superior filtration performance. It also produces a rigid cartridge that is less subject to collapse than any wound or pleated cartridge, yet is not brittle or prone to breakage problems common with resin-bonded cartridges. Also, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. Order a case and save even more.
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    $13.99 Special Price $9.99 As low as $7.99
  5. Pentek RFC-20 # 155065 RFC20 Radial Flow GAC Carbon Whole House Replacement Water Filter Cartridge
    Pentek RFC-20 # 155065 RFC20 Radial Flow GAC Carbon Whole House Replacement Water Filter Cartridge

    Pentek RFC-20 # 155065 RFC20 Radial Flow GAC Carbon Whole House Replacement Water Filter Cartridge Compatible With Culligan, Ametek, US Filter, Plymouth, Kleen Plus, American Plumber, Bruner and Many Other Brands. Radial Flow Granular Activated Carbon Water Filter. 25 micron outer shell. 20" long X 2 7/8" diameter. 6 per case, sold individually. Ametek # 155065. RFC Series cartridges are constructed with a porous polypropylene outer shell and durable polypropylene end caps. 70 micron outer shell. Sandwiched between the outer shell and the core is a bed of granular activated carbon.  Order a case and save even more.

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    $39.99 Special Price $31.99 As low as $27.99
  6. KX ChloraGuard-20 Matrikx# 36-250-20-Matrikx Replacement Water Filter
    KX ChloraGuard-20 Matrikx# 36-250-20-Matrikx Replacement Water Filter

    KX ChloraGuard 20 Now with enhanced Chloramine reduction #36-250-20-Matrikx 2¾” X 20"

    2¾” X 20” Matrikx® ChloraGuard® filters, powered by GreenBlock® are made from 100% coconut shell carbon, a renewable, and ecologically sustainable material. The carbon is processed into blocks using a unique binder system and proprietary manufacturing techniques to produce filters with a greater number of micro-pores and available carbon surface area, wihch display superior absorption capacity and kinetic dynamics.

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    $39.99
  7. KX CTO-20 Matrikx # 32-250-20-Matrikx Replacement Water Filter
    KX CTO-20 Matrikx # 32-250-20-Matrikx Replacement Water Filter

    KX_CTO-20-Matrikx 32-250-20-Matrikx 2½” X 20” MATRIKX® CTO® filters, powered by GREENBLOCK®, are made using 100% coconut shell carbon, a renewable, and ecologically sustainable material. The carbon is processed into blocks using a unique binder system and proprietary manufacturing techniques to produce filters with a greater number of micro-pores and available carbon surface area, which display superior capacity kinetic dynamics.

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    $16.99
  8. KX CTO Plus 20 Matrikx # 01-250-20  Matrikx Replacement Water Filter
    KX CTO Plus 20 Matrikx # 01-250-20 Matrikx Replacement Water Filter

    KX_CTO-Plus 20-Matrikx Extruded Carbon Block Water Filter. Now with enhanced capacity for VOC reduction #01-250-20-Matrikx. 2½” X 20”

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    $29.99
  9. Pentek CRFC20-BB Replacement Water Filter
    Pentek CRFC20-BB Replacement Water Filter

    20" Big Blue Radial Flow Chloramine, Chlorine, Taste & Odor Reduction Water Filter. 25 Micron Rating. #155967-43.  This Pentek CRFC20-BB carbon filter cartridge reduces chlorine and chloramine in residential and commercial drinking water. It has nominal filtration rating of 20 microns at an efficiency of 85%. The cartridge is made of granular activated carbon (GAC) media with a spun polypropylene inner wrap for post filtering of carbon fines and a porous polyethylene outer shell.

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    $133.96
  10. Omnifilter RS6-20 Pleated 30 Micron 20" Heavy Duty Sediment Cartridge
    Omnifilter RS6-20 Pleated 30 Micron 20" Heavy Duty Sediment Cartridge
    • Reduces sediment
    • Contains more than 16 square feet of filtration surface area
    • Pairs best with BF6, BF7, BF9C, BF35, BF36C, BF55
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    $45.25 Special Price $29.95
  11. Omnifilter RS18-20 Heavy Duty 20" Polyspun Sediment Cartridge - 50 Micron Reduction
    Omnifilter RS18-20 Heavy Duty 20" Polyspun Sediment Cartridge - 50 Micron Reduction

    Heavy duty filter cartridge, spun polypropylene, reduces sediment

    • 30,000 and 60,000 gallon filter life
    • Pairs best with BF6, BF7, BF9C, BF35, BF36C, BF55
    • Reduces sediment
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    $17.35
  12. GE Osmonics ® Purtrex PX-3-20 20 Inch Sediment Water Filter # 93124
    GE Osmonics ® Purtrex PX-3-20 20 Inch Sediment Water Filter # 93124
    GE Osmonics ® Purtrex PX-3-20 3 Micron 20" Sediment Water Pre Filter. True-graded density pure polypropylene depth filter. # 93124 20" long X 2 1/2" diameter. 20 per case, sold individually. Order a case and save even more.
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    $13.99 Special Price $8.99 As low as $4.49
  13. GE Osmonics ® Purtrex PX-10-20 20 Inch Sediment Water Filter # 93046
    GE Osmonics ® Purtrex PX-10-20 20 Inch Sediment Water Filter # 93046
    GE Osmonics ® Purtrex PX-10-20 # 93046 - 10 Micron 20" Sediment Water Pre Filter. True-graded density pure polypropylene depth filter. #93046 20" long X 2 1/2" diameter. 20 per case, sold individually. Order a case and save even more.
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    $12.99 Special Price $8.99 As low as $4.49
  14. Omnipure CL-10RO-T/33 GAC Inline Replacement Water Filter-1000
    Omnipure ® CL-10RO-T/33 GAC Inline Replacement Water Filter

    Omnipure ® CL-10RO-T/33 inline GAC carbon water filter replacement cartridge. 1/4" (-B) or 3/8" (-C) FNPT (Female National Pipe Thread) connections. Replacement Jaco connectors and John Guest Speedfit connectors available separately for 1/4" or 3/8" tube. 25 per case, priced and sold individually. Order a case and save even more.

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    $21.99 Special Price $11.99 As low as $9.49
  15. GE Osmonics ® Purtrex PX-20-20 20 Micron 20 Inch Sediment Water Filter # 93045
    GE Osmonics ® Purtrex PX-20-20 20 Micron 20 Inch Sediment Water Filter # 93045
    GE Osmonics ® Purtrex PX-20-20 20 Micron 20" Sediment Water Pre Filter. True-graded density pure polypropylene depth filter. # 93045 20" long X 2 1/2" diameter. 20 per case, sold individually. Order a case and save even more.
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    $13.99 Special Price $8.99 As low as $4.49
  16. GE Osmonics ® Purtrex PX-30-20 20 Inch Sediment Water Filter # 93044
    GE Osmonics ® Purtrex PX-30-20 20 Inch Sediment Water Filter # 93044
    GE Osmonics ® Purtrex PX-30-20 30 Micron 20" Sediment Water Pre Filter. True-graded density pure polypropylene depth filter. # 93044 20" long X 2 1/2" diameter. 20 per case, sold individually. Order a case and save even more.
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    $13.99 Special Price $8.99 As low as $4.49
  17. GE Osmonics ® Purtrex PX-50-20 50 Micron 20 Inch Sediment Replacement Water Filter # 93123
    GE Osmonics ® Purtrex PX-50-20 20 Inch Sediment Water Filter # 93123
    GE Osmonics ® Purtrex PX-50-20 50 Micron 20" Sediment Water Pre Filter. True-graded density pure polypropylene depth filter. # 93123 20" long X 2 1/2" diameter. 20 per case, sold individually. Order a case and save even more.
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    $13.99 Special Price $8.99 As low as $4.49
  18. 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
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    $9.99 Special Price $6.99 As low as $4.99
  19. PENTEK- CC-20 #155138 - GAC Carbon Replacement Water Filter - 1000
    Pentek CC-20 # 155138 GAC Carbon Replacement Water Filter CC20
    Pentek CC-20 # 155138 GAC Carbon Replacement Water Filter CC20 Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. Granular Activated Carbon Water Filter. 20" long X 2 7/8" diameter. 6 per case, sold individually. Ametek # 155138 CC Series granular activated carbon cartridges are an excellent choice to reduce unwanted taste, odor, chlorine and certain VOC's from potable drinking water. They contain coconut shell based activated carbon, which produces drinking water of exceptional taste and quality.
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    $28.99 Special Price $21.99 As low as $15.99
  20. Pentek ECP20-20 # 255487 Replacement Sediment Water Filter
    Pentek ECP20-20 # 255487 ECP20-20 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek ECP20-20 # 255487 ECP20-20 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. 20" 20 Micron Pleated Cellulose-Polyester Sediment Water Filter. 20" long X 2 1/2" diameter. 14 per case, sold individually. Ametek # 255487 ECP Series cartridges are manufactured from a special formulation of resin-impregnated cellulose and polyester fibers. This construction provides high flow rates and dirt-holding capacities, while maintaining extremely low pressure drops. The media is pleated around a polypropylene core for added strength and the ends are immersed in a thermo-setting vinyl plastisol. Embedding and sealing each end of the pleat block in this fashion fuses the components together forming a unitized end cap and gasket. Order a case and save even more.
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    $17.99 Special Price $12.99 As low as $9.99
  21. Pentek GAC-20 # 155111 GAC20 GAC Carbon Replacement Water Filter Cartridge
    Pentek GAC-20 # 155111 GAC20 GAC Carbon Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek GAC-20 # 155111 GAC20 GAC Carbon Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. Granular Activated Carbon Water Filter. 20" long X 2 7/8" diameter. 6 per case, sold individually. Ametek # 155111 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.
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    $27.99 Special Price $19.99 As low as $15.99
  22. Pentek EPM-20 # 155635 EPM20 Carbon Block Replacement Water Filter Cartridge
    Pentek EPM-20 # 155635 EPM20 Carbon Block Replacement Water Filter Cartridge
    Pentek EPM-20 # 155635 EPM20 Carbon Block Replacement Water Filter Cartridge Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. 10 Micron Carbon Block Water Filter. 20" long X 2 1/2" diameter. 6 per case, sold individually. Ametek # 155635 EPM Series cartridges are a modified version of our "EP Series" cartridge. An economical price makes this cartridge suitable for taste, odor and chlorine reduction, as well as sediment filtration. EPM Series cartridges are manufactured using a patented process that yields a cartridge with a nominal 10 micron filtration rating, high porosity and greater chlorine removal capacity. The high porosity design helps prevent the cartridge from plugging before its adsorption capability is exhausted, maximizing the utilization of the carbon while maintaining low pressure drop. Order a case of 12 and save even more.
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    $24.99 Special Price $17.99 As low as $12.99
  23. Pentek EP-20 # 155529 EP20 Carbon Block Replacement Water Filter Cartridge
    Pentek EP-20 # 155529 EP20 Carbon Block Replacement Water Filter Cartridge
    Pentek EP-20 # 155529 EP20 Carbon Block Replacement Water Filter Cartridge Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. 5 Micron Carbon Block Water Filter. 20" long X 2 1/2" diameter. 6 per case, sold individually. Ametek # 155529 EP Series cartridges are versatile and combine the long life of carbon block filtration with the higher dirt-loading tolerance of wound, carbon-impregnated paper cartridges like our C-1. EP Series cartridges are manufactured using a patented process that yields a cartridge with a nominal 5 micron filtration rating, high porosity and greater chlorine removal capacity. The high porosity design helps prevent the cartridge from plugging before its adsorption capability is exhausted, maximizing the utilization of the carbon while maintaining low pressure drop. Order a case and save even more.
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    $28.99 Special Price $19.99 As low as $15.99
  24. Pentek CBC-20 Carbon Block Replacement Water Filter # 155309 CBC20
    Pentek CBC-20 Carbon Block Replacement Water Filter # 155309 CBC20
    Pentek CBC-20 Carbon Block Replacement Water Filter # 155309 CBC20 Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner / Many Other Brands. Carbon Block Half Micron Water Filter. 20" long X 2 7/8" diameter. 6 per case, sold individually. Ametek # 155309 CBC Series cartridges are highly effective at reducing unwanted taste, odor, chlorine, certain VOC's and pesticides from potable drinking water. With a nominal 0.5 micron rating, they are equally effective at reducing Cryptosporidium and Giardia cysts, as well as fine sediment. They also make excellent polishing filters or pre-filters in applications requiring fine filtration and high capacity. Excellent prefilter. Order a case and save even more.
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    $38.99 Special Price $29.99 As low as $23.99
  25. KX Matrikx ® +5/VOC 20 Inch Carbon Block Water Filter # 02-250-125-20
    KX Matrikx ® +5/VOC 20 Inch Carbon Block Water Filter # 02-250-125-20
    KX Matrikx ® +5/VOC 20 Inch # 02-250-125-20 2 Micron 20" Extruded Carbon Block Water Filter with coconut shell for best taste. 20" long X 2 1/2" diameter OD X 1 1/4" diameter ID. DISCONTINUED 3 IN STOCK OF THE US MADE FILTERS.
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    $39.99 Special Price $29.99 As low as $28.99
  26. 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.
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    $5.69 Special Price $4.99 As low as $3.00
  27. 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

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    $5.99 Special Price $3.99 As low as $1.79
  28. Pro Products Sani System Water Filtration System Sanitizer
    Pro Products Sani System Water Filtration System Sanitizer
    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. Alos NSF certified. 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. Pro Products Sani System Sanitizer. 0.25 fl. oz. concentrate is perfect for your RO reverse osmosis drinking water system sanitizing..
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    $7.99 Special Price $4.99 As low as $2.49
  29. 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.
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    $49.99 Special Price $37.99 As low as $17.99
  30. 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!
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    $49.99 Special Price $39.99 As low as $19.99
  31. Puroflo FLR-868 faucet
    Puroflo FLR-868 Chrome Non-Air Gap Faucet
    Puroflo FLR-868 Long Reach Chrome Non-Air Gap Premium Faucet is NSF Certified. Smooth operating ceramic disk design with 12" High Reach Neck Design. California Prop. 65 and AB1953 compliant. Low Lead Level
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    $41.99 Special Price $29.99
  32. Stainless Steel Designer Faucet for RO Reverse Osmosis & Drinking Water Filtration Systems
    Stainless Steel Designer Faucet for RO Reverse Osmosis & Drinking Water Filtration Systems
    Stainless Steel Designer Faucet for Drinking Water Systems. Beautiful designer faucet for beautiful kitchens. Air Gap / Non Air Gap design, single or three tube connection. Made of high quality 304 stainless steel incorporating a smooth operating ceramic disk element for extended reliability and quality. Great replacement upgrade for RO Reverse Osmosis and drinking water filtration systems. Lever Style Handle. High Reach Neck Design (12" / 305mm) 360 Degree Swivel Neck. Unique Protective Spout Tip which Prevents After Drip. 2 1/4" Base Diameter (57 mm) Drilled Hole Size Needed is 7/8".
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    $219.99 Special Price $89.95
  33. GGN-Faucet-AG-P-Chrome Air Gap Faucet-Long Reach-1000
    Chrome Air Gap Faucet - Long Reach GGN-FAUCET-AG-P

    Chrome Air Gap Faucet - Long Reach GGN-FAUCET-AG-P 

    The perfect replacement faucet for under sink reverse osmosis drinking water systems.  Works as air gap or non air gap.  Quick release when drawing a glass of water or lock it on to fill a pitcher or cooking pot.   This is a top selling replacement faucet for most reverse osmosis systems.

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    $39.99 Special Price $29.99
  34. PREVIOUS VERSION: Automatic Shut-Off Valve for the Reverse Osmosis RO System-ASP ASV-1000
    Automatic Shut Off Valve for reverse osmosis system - ASO ASV
    Auto Shut Off RO 1 - Automatic shutoff valve for reverse osmosis systems. ASO ASV Easy to use 1/4" OD Tube Jaco connectors included. - The "in & out" markings are on the top of the valve. The top side of the valve is the high pressure side and the bottom side is the low pressure side. The high pressure from the filter housings goes to the "in" on the top of the valve. Then the high pressure "out" goes to the membrane housing "in". The membrane housing low pressure "out" connects to the "in" on the bottom side of the valve. The "out" on the bottom goes to the tank. The valve automatically shuts off production when the tank pressure reaches approximately 65% of the incoming line pressure.
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    $28.99 Special Price $19.99 As low as $15.99
  35. Filtamate 85 PSI APEX Inline Water Pressure Regulator With 1/4" Quick Connections
    Filtamate 85 PSI APEX Inline Water Pressure Regulator With 1/4" Quick Connections
    APEX Filtamate 85 PSI Inline Pressure Regulator. 1/4" Quick Connectors. Great inline pressure regulator to prevent excessive pressure from reaching your RO Reverse Osmosis system or other sensitive water equipment. Helps prevent water spikes, or surges, that can lead to system failure or leaks.
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    $34.99 Special Price $22.99 As low as $19.39
  36. Inline Check Valve - Back Flow Prevention - John Guest Speedfit Quick Connection 1/4SCV and 3/8SCV
    Inline Check Valve - Back Flow Prevention
    Inline Check Valve - Back Flow Prevention - Check Valve- 1/4" quick connect - one way flow, Easy to install. 1/4SCV and 3/8SCV or John Guest Elbow Fitting for Membrane Housing.
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    $27.99 Special Price $19.99 As low as $17.99
  37. 4 Gallon Reverse Osmosis Water Tank Replacement - GGN-Tank-4-Pro 3.2
    4 Gallon Reverse Osmosis Water Tank Replacement - GGN-Tank-4-Pro 3.2

    4 Gallon Reverse Osmosis Tank GGN-Tank-4 Pro 3.2. This is the perfect replacement tank for most RO reverse osmosis systems.   Stainless Steel valve connector.  Perfect replacement for all home RO reverse osmosis drinking water systems.  

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    $79.99 Special Price $49.99
  38. 4 Gallon RO Water Tank-1000
    4 Gallon Water Tank for RO Reverse Osmisis Drinking Water Systems - GGN-Tank-PL4
    4 Gallon Water Tank for RO Reverse Osmosis Drinking Water Systems - GGN-Tank-PL4- Plastic 4 Gallon (15L) Water Storage Tank. 10.83" Diameter X 16.15" Height. NSF Certified. UPC #850901003514
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    $79.99 Special Price $49.99 As low as $44.99
  39. SS Stainless Steel Reverse Osmosis Storage Tank - Premium Quality
    SS Stainless Steel Reverse Osmosis Storage Tank - Premium Quality

    SS Stainless Steel Reverse Osmosis 4.4 Gallon Total Capacity Tank

    This is one of the finest RO tanks we have ever seen. The patented O-ring seal on the air stem assures "set and forget" pressure settings. Keeping the pressure in the tank set correctly is an important factor in operating your RO system. Approximately 14" high (without the tank valve) X 11" in diameter.

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    $149.99 Special Price $88.99 As low as $75.99
  40. 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.
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    $24.99 Special Price $17.99 As low as $12.99
  41.  Inversion Tank Stand Reverse Osmosis System
    Inversion Tank Stand Reverse Osmosis System

    Inversion Stand for Water Tank on  Reverse Osmosis Systems.  Flip the tank over and remove the weight of the water from the bladder.  Pressure and storage capacity are unchanged.  Extends the life of your reverse osmosis water tank.

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    $27.99 Special Price $17.99
  42. Inline Water Shut Off Valve-1000
    Inline Water Shut Off Valve - Great For Refrigerators And Ice Machines
    Inline Water Shut Off Valve With 1/4" or 3/8" Quick Connect Fittings - Very easy to install and use. - Great for refrigerators, UV systems, chillers, hot pots, coffee machines, ice machines etc.
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    $14.99 Special Price $9.99 As low as $6.99
  43. John Guest Poly Tubing 3/8" For Pure Drinking Filter Water Systems
    John Guest ® Poly Tubing 3/8" For Pure Drinking Filter Water Systems
    John Guest ® Poly Tubing 3/8" O.D. (outer diameter) For Pure Drinking Water Systems - 3/8" O.D. (Outer Dimension) High Grade Drinking Water Tubing. Speedfit quick connector compatible. For Use With Optional Drain Saddle For Air Gap Faucet. Sold by the foot. Order 20 to get 20 feet.
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    $0.50 Special Price $0.32 As low as $0.24
  44. John Guest ® Tube Cutter - TSNIP
    John Guest ® Tube Cutter - TSNIP
    John Guest ® tube cutter TSNIP - Great for making a perfect cut everytime. Helps prevent leaks by making a square end cut ensuring proper fit and seal in water connecttion fittings. A real must for any professional or discerning home owner.
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    $17.99 Special Price $12.99 As low as $10.99
  45. John Guest Super Speedfit Quick Connector - Male - Elbow
    John Guest ® Super Speedfit Quick Connector - Male - Elbow
    ohn Guest ® Super Speedfit Quick Connector - Male - Elbow - John Guest Super Speedfit Quick Connectors - Male - MNPT - Sold in pairs. Price is per pair. These fittings are manufactured in gray acetal copolymer with food grade nitrile ‘o’ ring, making them especially suitable for applications involving foodstuff and potable liquids like reverse osmosis drinking water. They are equally suitable for air and inert gasses and can therefore be used on CO2 lines, pneumatic applications, and vacuum. For more than a decade, John Guest has been supplying Super Speedfit fittings to the Water Purification market for drinking water applications in homes, restaurants and industry. John Guest products are listed with the WRC(UK), NSF(US) and SK(Germany). PI480821S , PI480822S , PI480823S , PI481222S , PI481223S
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    $8.99 Special Price $4.99 As low as $3.99
Page

Easy TDS Membrane Performance 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.







* Ultima ® is the registered trademark of B & R Industries, the manufacturer of Ultima ® brand water treatment equipment. The replacement filters and membranes listed above are not manufactured or endorsed by Ultima. Rather, these filters and membranes are manufactured by other companies. While these filters and membranes are compatible for use in Ultima ® 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 Ultima ® Reverse Osmosis Water Purification System equipment.