PURONICS Premium Alkaline Replacement Filter
PURONICS Carbon Block Replacement FilterPURONICS MicroMax 7000 Replacement Filter Pack

Replacement Filters

PURONICS Premium Alkaline Replacement Filter

SKU ICW-ALK-01 Backordered(26)

This post-membrane alkaline cartridge is the final polishing stage on qualifying reverse osmosis systems installed by iContracting Water. It reintroduces select minerals after the membrane stage, smoothing the finish of the water and helping raise pH toward a balanced range without changing the way your system operates.

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1

Replace

Every 12 months

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Book a filter replacement visit

Fits your system

This pack is a direct-fit replacement for:

  • iContracting Water alkaline-equipped RO drinking water systems
  • Qualifying six-stage under-sink RO systems installed by our team

Not sure which system you have? Call (855) 684-7663 and we'll confirm the right parts for you.

Reorder & maintenance reminder

  • Filters & cartridges: every 6–12 months. Sediment, carbon and alkaline stages lose capacity within a year on Central Florida water.
  • Membranes & media: every 2–3 years. RO membranes and tank media last longer, but should be checked at the 2-year mark.
  • This item's schedule: Every 12 months

Next replacement

September 14, 2027

Features

  • Adds select minerals back after the reverse osmosis stage
  • Helps lift pH toward a balanced, pleasant range
  • Rounds out taste and mouthfeel of RO water
  • Quick-connect body for a fast, tool-light swap
  • Manufactured to the tolerances of the systems we install

Specifications

Stage
Post-membrane alkaline (Stage 6)
Connection
Quick-connect inline
Media
Mineral blend
Service life
Approximately 12 months
Operating temp.
40-100°F

Compatible systems

  • iContracting Water alkaline-equipped RO drinking water systems
  • Qualifying six-stage under-sink RO systems installed by our team

Installation recommendations

  1. 1Shut the feed valve and open the RO faucet to relieve pressure.
  2. 2Release the quick-connect fittings and remove the spent cartridge.
  3. 3Install the new cartridge following the flow arrow.
  4. 4Restore pressure, check for leaks, then flush the system for 10 minutes.

Frequently asked questions

Customer reviews

"Swapped it in ten minutes and the water tastes like day one again."
Marisol T.
"Ordered on a Monday, installed by the weekend. Exactly the right fit."
Greg P.
"Water feels smoother than it has in months. Simple change-out."
Alicia M.
"Perfect fit on our under-sink system, no leaks at all."
Daniel R.
"My kids actually drink from the tap again. That says everything."
Karen W.
"Clear instructions and the cartridge seated on the first try."
Hector V.
"Coffee tastes noticeably better since the swap."
Bethany L.
"Shipped fast and packaged well. No damage in transit."
Tomas G.
"Third year ordering these. Consistent quality every time."
Nicole B.
"Flat taste is gone. Wish I had changed it sooner."
Andres C.
"The flush step took a few minutes and then everything was crystal clear."
Julia F.
"Easy annual maintenance. No tools needed beyond the wrench."
Marcus D.
"Great customer support helped me confirm the right cartridge."
Sandra Q.
"Water is crisp and the ice is clear again."
Owen H.
"Very happy. Exactly what our technician recommended."
Rosa E.
"No pressure loss at the faucet after installing."
Peter N.
"Simple, reliable, and the price was fair."
Ivette S.
"Ordered two so I have a spare for next year."
Chris B.
"Noticed the improvement the same evening."
Lydia A.
"Fit our Puronics unit perfectly. No adapters needed."
Fernando P.
"Tea and coffee both taste cleaner. Big difference."
Megan K.
"Straightforward swap, back in service in minutes."
Dwight J.
"Good quality build. Seals were tight and clean."
Camila O.
"Delivery was quicker than expected and the fit is spot on."
Robert I.
"Been using these for years without a single issue."
Tanya U.
"Great value for the amount of water we run through it."
Victor L.

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  • Extruded carbon block for extended contact time
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