Ultimate Series 90 GPD Alkaline Reverse Osmosis Replacement Filter Set For RO PH90 Systems Includes 1 Sediment Filter 2 Carbon Block Filters And FI PHPLUS QC Alkaline Calcite Filter USA Made 5 Micron Stage 1 For Long Lasting Clean Water

Three-filter 90 GPD RO kit with alkaline calcite (PH90)
✔️ Includes 1 sediment, 2 carbon block filters, and 1 FI-PHPLUS-QC

This USA-made pre-filter set is designed for 90 GPD RO systems (PH90) and other 10" standard-size under-counter units. It bundles a sediment filter, two carbon block filters, and a FI-PHPLUS-QC alkaline remineralization filter to protect and extend the life of your RO unit.

✅ 1st Stage: 5 micron polypropylene sediment filter removes dirt, particles, rust
✅ 2nd Stage: 5 micron extruded carbon block filter removes chlorine, tastes, odors
✅ 3rd Stage: 5 micron extruded carbon block filter removes VOCs and common impurities
✅ 6th Stage: 10-inch (254 mm) inline calcium carbonate remineralization filter raises pH
✅ USA-made high-capacity filters designed to last 12+ months and fit PH90 and other 10" RO systems

💡 What is a remineralization filter in a home RO system and why add calcium carbonate?
It’s a handy upgrade that restores minerals and raises pH for improved taste.
- Restores minerals and improves mouthfeel
- Raises pH for less acidity in drinking water
- Handy for balancing minerals in standard RO setups
- Helps protect the system by stabilizing water chemistry

✝️