iSpring PH100 6-Stage Alkaline Under-Sink Reverse Osmosis System, 100 GPD
Six-stage under-sink RO system rated at 100 GPD with alkaline remineralization, a 1:1 pure-to-waste ratio and US-made filters and membrane.
$374
Usability
The PH100 is the RO100 with an alkaline remineralization stage added, keeping the U.S.-made filters and 1:1 waste ratio while fixing the flat taste of reverse osmosis water. iSpring lists it as NSF/ANSI 58 certified but publishes no per-contaminant certified figures, so the specific reduction numbers are manufacturer specifications rather than certified values.
- Alkaline stage remineralizes RO water and improves taste
- US-made filters and RO membrane
- 1:1 pure-to-waste ratio for a tanked-style system
- Manufacturer lists NSF/ANSI 58 certification
- 1-year warranty with lifetime support
- Six stages at a mid-range price
- NSF/ANSI 58 certification is stated without published per-contaminant figures
- 100 GPD output is lower than the 500 GPD tankless units
- Traditional under-sink layout uses more cabinet space
- Alkaline stage adds a cartridge to the replacement schedule
- Warranty is 1 year and requires registration
- Municipal water only; well water needs pre-treatment
The iSpring PH100 is a six-stage under-sink reverse osmosis system rated at 100 GPD with a 1:1 pure-to-waste ratio. It runs a PP sediment filter, a carbon KDF (GAC) filter, a carbon block (CTO) filter, a 100 GPD RO membrane, a fine post-carbon filter, and an alkaline remineralization stage that restores minerals and raises pH after the membrane. iSpring notes the filters and membrane are made in the U.S.A.
The alkaline stage is the difference from the RO100, targeting the flat taste of reverse osmosis water. The 1:1 waste ratio keeps efficiency high for a tanked-style under-sink system, and it carries a 1-year warranty with lifetime support.
iSpring states the PH100 is certified to NSF/ANSI 58 but does not publish per-contaminant certified figures, so specific reductions here are described from manufacturer specifications. It is intended for municipal tap water.
Additional information
Specification: iSpring PH100 6-Stage Alkaline Under-Sink Reverse Osmosis System, 100 GPD
| Water Filtration Specifications | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||
| General Specifications | ||||||||||
|
||||||||||
There are no reviews yet.