
Omnipure (K5651-JJ) Inline Calcite/Magnesium 12”x2.5” Port ¼” Quick connect
Inline Calcite/Magnesium Remineralization Filter
The K5651-JJ adds back essential minerals after RO filtration, restoring balanced pH and improving taste with natural calcite and magnesium oxide media in a compact 12" inline housing.
Remineralization for Better Water
pH Correction
Calcite media naturally raises pH levels, correcting the slightly acidic water that exits RO membranes and preventing corrosion downstream.
Mineral Restoration
Magnesium oxide adds back beneficial minerals stripped during reverse osmosis, improving both taste and nutritional profile of finished water.
Quick Connect Design
Standard ¼" quick connect ports make the K5651-JJ easy to install inline after your RO system without tools or complicated plumbing.
Compact Inline Format
The 12" x 2.5" housing fits neatly under most sinks, adding remineralization without requiring a separate housing or mounting bracket.
Operating Parameters
| Model Number | K5651-JJ |
| Dimensions | 12" x 2.5" |
| Connection Type | ¼" Quick Connect (Both Ends) |
| Media Type | Calcite / Magnesium Oxide |
| Maximum Flow Rate | 0.50 GPM |
| Maximum Pressure | 125 PSIG |
| Temperature Range | 35°F – 100°F |
| Service Life | 6 Months |
Works With Most RO Systems
The Omnipure K5651-JJ is designed for post-RO remineralization and connects inline after the membrane and any post-carbon filters. Compatible with any residential or commercial reverse osmosis system using standard ¼" quick connect tubing. Ideal for systems where you want to restore minerals and balance pH without a separate calcite tank. Works with Omnipure, Pentek, Hydronix, and other major RO brands using quarter-inch tubing connections.
Replacement Schedule
Replace Entire Filter
The K5651-JJ is a sealed inline cartridge. Replace the entire unit every six months or sooner if you notice a drop in pH or taste quality.
Check Connections
Inspect quick connect fittings for any signs of leakage or wear. Ensure tubing is fully seated before turning water supply back on.
Omnipure Quality
Manufactured by Omnipure, a trusted name in specialty filtration with decades of experience in water treatment solutions.
Tool-Free Install
Quick connect ports mean you can swap filters in seconds without wrenches, clamps, or plumbing expertise.
Cost Effective
Six-month service life and straightforward replacement keep your operating costs low while maintaining great-tasting remineralized water.
Inline Calcite/Magnesium Remineralization Filter
The K5651-JJ adds back essential minerals after RO filtration, restoring balanced pH and improving taste with natural calcite and magnesium oxide media in a compact 12" inline housing.
Remineralization for Better Water
pH Correction
Calcite media naturally raises pH levels, correcting the slightly acidic water that exits RO membranes and preventing corrosion downstream.
Mineral Restoration
Magnesium oxide adds back beneficial minerals stripped during reverse osmosis, improving both taste and nutritional profile of finished water.
Quick Connect Design
Standard ¼" quick connect ports make the K5651-JJ easy to install inline after your RO system without tools or complicated plumbing.
Compact Inline Format
The 12" x 2.5" housing fits neatly under most sinks, adding remineralization without requiring a separate housing or mounting bracket.
Operating Parameters
| Model Number | K5651-JJ |
| Dimensions | 12" x 2.5" |
| Connection Type | ¼" Quick Connect (Both Ends) |
| Media Type | Calcite / Magnesium Oxide |
| Maximum Flow Rate | 0.50 GPM |
| Maximum Pressure | 125 PSIG |
| Temperature Range | 35°F – 100°F |
| Service Life | 6 Months |
Works With Most RO Systems
The Omnipure K5651-JJ is designed for post-RO remineralization and connects inline after the membrane and any post-carbon filters. Compatible with any residential or commercial reverse osmosis system using standard ¼" quick connect tubing. Ideal for systems where you want to restore minerals and balance pH without a separate calcite tank. Works with Omnipure, Pentek, Hydronix, and other major RO brands using quarter-inch tubing connections.
Replacement Schedule
Replace Entire Filter
The K5651-JJ is a sealed inline cartridge. Replace the entire unit every six months or sooner if you notice a drop in pH or taste quality.
Check Connections
Inspect quick connect fittings for any signs of leakage or wear. Ensure tubing is fully seated before turning water supply back on.
Omnipure Quality
Manufactured by Omnipure, a trusted name in specialty filtration with decades of experience in water treatment solutions.
Tool-Free Install
Quick connect ports mean you can swap filters in seconds without wrenches, clamps, or plumbing expertise.
Cost Effective
Six-month service life and straightforward replacement keep your operating costs low while maintaining great-tasting remineralized water.
Original: $103.75
-65%$103.75
$36.31Description
Inline Calcite/Magnesium Remineralization Filter
The K5651-JJ adds back essential minerals after RO filtration, restoring balanced pH and improving taste with natural calcite and magnesium oxide media in a compact 12" inline housing.
Remineralization for Better Water
pH Correction
Calcite media naturally raises pH levels, correcting the slightly acidic water that exits RO membranes and preventing corrosion downstream.
Mineral Restoration
Magnesium oxide adds back beneficial minerals stripped during reverse osmosis, improving both taste and nutritional profile of finished water.
Quick Connect Design
Standard ¼" quick connect ports make the K5651-JJ easy to install inline after your RO system without tools or complicated plumbing.
Compact Inline Format
The 12" x 2.5" housing fits neatly under most sinks, adding remineralization without requiring a separate housing or mounting bracket.
Operating Parameters
| Model Number | K5651-JJ |
| Dimensions | 12" x 2.5" |
| Connection Type | ¼" Quick Connect (Both Ends) |
| Media Type | Calcite / Magnesium Oxide |
| Maximum Flow Rate | 0.50 GPM |
| Maximum Pressure | 125 PSIG |
| Temperature Range | 35°F – 100°F |
| Service Life | 6 Months |
Works With Most RO Systems
The Omnipure K5651-JJ is designed for post-RO remineralization and connects inline after the membrane and any post-carbon filters. Compatible with any residential or commercial reverse osmosis system using standard ¼" quick connect tubing. Ideal for systems where you want to restore minerals and balance pH without a separate calcite tank. Works with Omnipure, Pentek, Hydronix, and other major RO brands using quarter-inch tubing connections.
Replacement Schedule
Replace Entire Filter
The K5651-JJ is a sealed inline cartridge. Replace the entire unit every six months or sooner if you notice a drop in pH or taste quality.
Check Connections
Inspect quick connect fittings for any signs of leakage or wear. Ensure tubing is fully seated before turning water supply back on.
Omnipure Quality
Manufactured by Omnipure, a trusted name in specialty filtration with decades of experience in water treatment solutions.
Tool-Free Install
Quick connect ports mean you can swap filters in seconds without wrenches, clamps, or plumbing expertise.
Cost Effective
Six-month service life and straightforward replacement keep your operating costs low while maintaining great-tasting remineralized water.














