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| Cartridge Type | Alkaline remineralization replacement |
| Capacity | 18 months under normal household use |
| Connection | 1/4 inch quick connect PH |
| Compatibility | All traditional under-sink reverse osmosis systems |
| Model Number | V21RFPH |
Optimize your reverse osmosis system with the VIVA21 V21RFPH Alkaline remineralization replacement filter. This single 1/4" quick connect pH+ replacement cartridge is specifically engineered to add calcium carbonate mineral back into the water. 18 months capacity under normal household use. Compatible with all traditional under sink reverse osmosis systems. Designed for high performance, consistent clean and healthy drinking water.
The catalog often lists the same model at several merchants — worth a price check before you buy.







