Omnipure K2551-KK Inline RO Remineralization & pH Neutralizing Filter – 3/8″ Quick Connect
Omnipure K2551-KK Inline RO Remineralization & pH Neutralizing Filter – 3/8″ Quick Connect
Add calcium and magnesium minerals to RO-treated water while helping raise its pH. This compact 10″ × 2″ inline cartridge contains a 50/50 blend of calcite and Corosex and connects directly to 3/8″ tubing.

Omnipure K2551-KK Inline RO Remineralization & pH Neutralizing Filter – 3/8″ Quick Connect
The Omnipure K2551-KK is an inline remineralization cartridge designed to help neutralize acidic water and replenish minerals after reverse osmosis treatment.
Its 50% calcite and 50% Corosex (magnesium oxide) media blend gradually dissolves as water passes through, adding calcium and magnesium while raising pH. The resulting pH and mineral content depend on the incoming water chemistry and contact time.
Built-in 3/8″ quick-connect fittings accept compatible tubing directly, making installation and replacement simple without a separate filter housing.
- Model: K2551-KK
- Cartridge dimensions: 10″ long × 2″ diameter
- Media: 50% calcite / 50% Corosex
- Connections: 3/8″ quick connect at both ends
- Application: Compatible under-sink RO systems and point-of-use pH correction
The media is consumed during use, so replace the cartridge periodically to maintain performance. Install according to the flow-direction arrow and flush before use.

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FAQs
How do I cancel or edit an order?
How do I cancel or edit an order?
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Here’s what you can do:
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What if there is a problem with my order?
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I didn't receive all off my order?
I didn't receive all off my order?
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