Amazing 30,000 gallon chlorine capacity (at 1 gpm flow rate) and great chemical removal properties. Our most popular cartridge. (Formerly MatriKX +1.)

A free-flowing but very effective carbon block. A versatile and inexpensive filter that works anywhere carbon filtration is needed.

High quality 0.5 micron carbon block drinking water filter. Rated for cyst removal and lead reduction, plus excellent taste/odor and chemical reduction properties. Not recommended for use in reverse osmosis units.

A limited-capacity cartridge designed to remove all mineral content from water.

Half granular coconut shell carbon and half activated alumina fluoride reduction resin.

1.5 pounds of KDF 55 with granular activated carbon. Extended chlorine reduction and heavy metal reduction.

A high quality nitrate reduction cartridge.

Our best fluoride reduction cartridge. A generous amount of highest quality activated alumina media.

Flowmatic Silver Impregnated GAC.

A granular cartridge for iron reduction.

A calcite cartridge designed to raise pH and TDS of low pH / low mineral water.

A granular carbon filter made with 100% Centaur catalytic carbon for chloramine, chlorine/taste/odor and hydrogen sulfide treatment.

A well water cartridge for iron and hydrogen sulfide reduction.

Chlorine/taste/odor cartridge for any application where taste/odor improvement is needed.

A granular carbon/calcite cartridge for raising pH, as well as chlorine and chemical redution.

A water softening cartridge filled with standard cation softener resin. Frequently used for car washing and window cleaning. Works best at low flow rates.

A Pentek carbon block for chlorine, chloramine, and chemical reduction. Manufacturer rated for 2,500 gallons chloramine reduction at 0.5 gpm.

Very high quality Pentek cartridge which uses premium grade coconut shell GAC for superb drinking water.

A granular Filox cartridge for iron, manganese and hydrogen sulfide removal.

A unique combination of sediment filter and carbon block, for chlorine reduction and taste/odor improvement.

Coconut shell carbon block for VOC reduction, taste and odor improvement, and general chemical reduction at a high flow rate.

A coconut shell catalytic carbon block filter for chlorine, chloramine, and general chemical and VOC reduction.

A very tight surface filter for low sediment applications.

A tight surface filter for low sediment applications.

A tight depth filter for low sediment applications.

A tight depth filter for low sediment applications.

A hot water depth filter, for normal sediment applications.

A popular surface filter for normal sediment applications.

A popular depth filter for normal sediment applications.

A popular depth filter for normal sediment applications.

Depth filter for sediment filtration.

A ceramic filter with silver for complete removal of bacteria and other pathogens. The famous Doulton Sterasyl in a larger diameter, freer flowing version.

High quality sub-micron extended pass carbon block filtration for Pura brand undersink UV1 & UVB ultraviolet units.

Free-flowing extended pass carbon block for Pura Brand undersink UV1 & UVB ultraviolet units

Pura GAC cartridge

Amazing 45,000 gallon chlorine capacity and great chemical removal properties. Our most popular cartridge.(Formerly MatriKX +1.)

A free-flowing but very effective carbon block. A versatile and inexpensive filter that works anywhere carbon filtration is needed.

A granular cartridge designed for chloramine and chemical reduction.

A granular cartridge designed for chlorine, chloramine and heavy metal reduction.

A well water cartridge for iron and hydrogen sulfide reduction.

A granular cartridge designed for hardness reduction.

A 2.5" X 20" cartridge filled with standard activated carbon, for taste and odor.

Coconut shell carbon block for VOC reduction, taste and odor improvement, and general chemical reduction at a high flow rate.

A media cartridge with Colorsorb carbon, manufactured with large “macropores” for the removal of color.

A coconut shell catalytic carbon block filter for chlorine, chloramine, and general chemical reduction.

High quality 0.5 micron carbon block drinking water filter. Rated for cyst removal, chlorine and chloramine reduction, PFAS/PFOA and lead reduction, plus excellent taste/odor and chemical reduction properties.

A very tight surface filter for low sediment applications.

A tight depth filter for low sediment applications.

A tight surface filter for low sediment applications.

A tight depth filter for low sediment applications.

A popular surface filter for normal sediment applications.

A popular depth filter for normal sediment applications.

Our most popular depth filter, for normal sediment applications.

A depth filter for sediment applications.

Depth filter for sediment filtration.

A depth filter for sediment applications.

A surface filter for sediment applications.

A depth filter for sediment applications.

A Pentek branded carbon block cartridge designed for chlorine and chemical reduction.

A catalytically charged carbon cartridge designed for chloramine and chemical reduction.

Amazing 120,000 gallon chlorine capacity and great chemical removal properties. Our most popular cartridge. (Formerly MatriKX +1.)

A free-flowing but very effective carbon block. A versatile and inexpensive filter that works anywhere carbon filtration is needed.

Pure Water Products Granular Activated Carbon Cartridge, 4.5" X 10"

A cation resin cartridge designed for hardness reduction.

A calcite cartridge for raising the pH of acidic water.

Coconut shell carbon block for VOC reduction, taste and odor improvement, and general chemical reduction at a high flow rate.

A coconut shell catalytic carbon block filter for chlorine, chloramine, and general chemical reduction.

High quality 0.5 micron carbon block drinking water filter. Rated for cyst removal, chlorine and chloramine reduction, PFAS/PFOA and lead reduction, plus excellent taste/odor and chemical reduction properties.

A media cartridge with Colorsorb carbon, manufactured with large “macropores” for the removal of color.

A tight surface filter for low sediment applications.

A popular surface filter for normal sediment applications.

A popular depth filter for normal sediment applications.

A popular depth filter for normal sediment applications.

A surface filter for sediment applications.

A depth filter for sediment applications.

A depth filter for sediment applications.

Depth filter for sediment filtration.

Amazing 240,000 gallon chlorine capacity and great chemical removal properties. Our most popular cartridge. (Formerly MatriKX +1.)

A free-flowing but very effective carbon block. A versatile and inexpensive filter that works anywhere carbon filtration is needed.

A granular activated carbon cartridge for chlorine/chemical reduction or any application where taste/odor improvement is needed.

A cation resin cartridge designed for hardness reduction.

A catalytically charged carbon cartridge designed for chloramine and chemical reduction.

A unique radial flow granular carbon cartridge from Pentek, for chlorine and chemical reduction.

An iron oxide cartridge for the reduction of iron.

A Pentek carbon block for chlorine, chloramine and chemical reduction. Manufacturer rated for 7,000 gallons chloramine reduction at 4 gpm.

A unique radial flow granular carbon cartridge from Pentek, for chlorine, chloramine and chemical reduction.

A media cartridge with Colorsorb carbon, manufactured with large “macropores” for the removal of color.

High quality 0.5 micron carbon block drinking water filter. Rated for cyst removal, chlorine and chloramine reduction, PFAS/PFOA and lead reduction, plus excellent taste/odor and chemical reduction properties.

A coconut shell catalytic carbon block filter for chlorine, chloramine, and general chemical and PFAS + VOC reduction. Best overall capacity for whole house chloramine removal.

A tight depth filter for low sediment applications.

A popular surface filter for normal sediment applications.

A popular depth filter for normal sediment applications.

Our most popular depth filter, for normal sediment applications.

A surface filter for sediment applications.

A depth filter for sediment applications.

A depth filter for sediment applications.

A tight surface filter for low sediment applications.

A depth filter for sediment applications.

A tight Pentek branded carbon block cartridge for chlorine and chemical reduction.

A Pentek branded carbon block cartridge for chlorine and chemical reduction.

A sub-micron, self-sterilizing ceramic candle. Strains out cysts and bacteria to assure potable water.

A Doulton ceramic candle with carbon block core capable of lead reduction, taste/odor improvement, and high volatile organic chemical removal. Works well as a siphon filter, too.

A 12" CTO-grade encapsulated 10-micron carbon block for chlorine and chemical reduction. This is the standard pre-filter for a Q Series reverse osmosis unit.

A granular coconut shell carbon filter for chlorine and chemical reduction. This is the standard post-filter for a Q Series reverse osmosis unit.

A carbon block filter with lead removal resin. Requires pre-filter (sediment) if water is not clean.

A 5 micron encapsulated sediment filter for normal sediment applications.

A great refrigerator filter. Removes chemicals, improves taste/odor, and protects the refrigerator from scale build up.

A cartridge filled with DI resin for situations (labs, etc.) where absolute zero total dissolved solids is required. It works best as a post-RO filter where solids have already been reduced.

Includes FC901, FC902 and service instructions.

Includes one FC902 and service instructions.

See our discussion of Q Series “cartridge logic” for more info.

Includes FC901, FC902, FC904 and service instructions.

Includes FC902, FC904 and service instructions.

See our discussion of Q Series “cartridge logic” for more info.

A tight 1 micron carbon block filter for cyst reduction. Requires pre-filter (sediment) if water is not clean.

Cap for all Q-Series cartridges. 1/4" Female Pipe Thread Ports. Fittings not included, but can be purchased from our RO parts page.

A carbon block cartridge for Hydrotech reverse osmosis units. Can serve as pre- or postfilter.

A sediment prefilter for Hydrotech reverse osmosis units. Black end caps.

A 5-micron sediment prefilter for Microline reverse osmosis units.

A Microline granular activated carbon cartridge. Reverse osmosis postfilter.

Microline carbon block for chemical reduction and taste/odor improvement. Can serve as a pre- or postfilter.

A 10" granular activated coconut shell carbon filter for chemical/chlorine reduction and taste/odor improvement, with 1/4" Quick Connect fittings.

A 10" granular activated carbon filter for chemical/chlorine reduction and taste/odor improvement, with 1/4" Jaco fittings.

A 10" economy granular carbon filter for chemical reduction and taste/odor improvement, with 1/4" female threads.

10" Inline GAC with 1/4" Female Threads

A 10" carbon block filter for chlorine/chemical reduction and taste/odor improvement, with 1/4" Female Threads.

A 10" granular cartridge for raising the pH of acidic water to neutral, along with chlorine/chemical reduction and taste/odor improvement, with 1/4" female threads.

A 10" granular filter for enhanced chlorine removal and taste/odor improvement, with 1/4" female threads.

A 10" granular filter for chlorine/chemical reduction, scaling prevention and taste/odor improvement, with 1/4" female threads.

An inline 10" sediment filter with 1/4" Female Threads, for normal sediment applications.

A 10" economy granular carbon filter for chemical reduction and taste/odor improvement, with 1/4" Quick Connect fittings.

A 10" economy granular carbon filter for chemical reduction and taste/odor improvement, with 1/4" Jaco fittings.

A 10" carbon block filter for chlorine/chemical reduction and taste/odor improvement, with 1/4" Quick Connect fittings.

A 10" carbon block filter for chlorine/chemical reduction and taste/odor improvement, with 1/4" Jaco fittings.

A 10" granular cartridge for raising the pH of acidic water to neutral, along with chlorine/chemical reduction and taste/odor improvement, with 1/4" Quick Connect fittings.

A 10" granular cartridge for raising the pH of acidic water to neutral, along with chlorine/chemical reduction and taste/odor improvement, with 1/4" Jaco fittings.

A 10" granular filter for enhanced chlorine removal and taste/odor improvement, with 1/4" Quick Connect fittings.

A 10" granular filter for enhanced chlorine removal and taste/odor improvement, with 1/4" Jaco fittings.

A 10" granular filter for chlorine/chemical reduction, scaling prevention and taste/odor improvement, with 1/4" quick connect fittings.

A 10" granular filter for chlorine/chemical reduction, scaling prevention and taste/odor improvement, with 1/4" Jaco fittings.

An inline 10" sediment filter with 1/4" Quick Connect fittings, for normal sediment applications.

An inline 10" sediment filter with 1/4" Jaco Fittings, for normal sediment applications.

Sprite High Output Replacement Cartridge

Sprite Hand-Held (and Shower Falls) Cartridge (two pack)

Replacement cartridge for the following Sprite filters (SL, AC, AM, AR, AP Series)

Replacement cartridge for the Sprite LO series shower filter.

A 24 gallon-per-day Pentair residential thin film composite (TFC) membrane. This is the standard membrane on our Black & White series units.

A Pentair 36 gallon-per-day residential thin film composite (TFC) membrane, for standard sized membrane housings.

A 50 gallon-per-day Filmtec residential thin film composite (TFC) membrane.

A 75 gallon-per-day Filmtec residential thin film composite (TFC) membrane.

A 100 gallon-per-day Filmtec residential thin film composite (TFC) membrane.

Axeon HF4 2.5" X 21" Membrane. Fits both Axeon L1-300 and Flexeon LT-300 units.

Pentair GRO 50 gallon-per-day encapsulated membrane with amazing 1:1 drain-to-permeate performance. This is the standard membrane in our Black & White: 50/50 Series units. Includes inline 1/4" check valve. Requires 150 ml drain line flow restrictor.

An 800 gallon-per-day thin film composite (TFC) membrane.

Standard Cartridge Refill Pack for 3 Stage Black and White RO Units. Includes pre and post carbon block filters (MatriKX CTO and MatriKX CTO Plus) plus service instructions for the Black and White unit

Replacement cartridges for Enhanced Performance Fluoride Filter. Includes two Activated Alumina Cartridges, MatriKX CTO+ and an inline GAC/KDF cartridge with fittings.

5 Micron Sediment Filter and two CTO carbon blocks. Fits both Axeon L1-300 and Flexeon LT-300 units.

5 Micron Sediment Filter, CTO Carbon Block and CTO+ Carbon Block. Fits both Axeon L1-300 and Flexeon LT-300 units.

5 Micron Sediment, 2 CTO Carbon Blocks. Fits both Axeon L1-300 and Flexeon LT-300 units.

5 Micron Sediment, CTO Carbon Block, CTO+ Carbon Block. Fits both Axeon L1-300 and Flexeon LT-300 units.

Replacement Filter pack for “Classic” Enhanced Performance Fluoride Filter produced prior to November 2014. Contains AAL Fluoride Cartridge, PB-1 Carbon Block and KX-CTO+ Carbon Block.

Economy RO Filter Pack Replacement filters for Flomatic/Watts Economy RO unit. Includes CTO carbon block prefilter, granular carbon post filter and 5 micron sediment filter.