Full side-by-side
| Spec | Prime Water | StarWellness L9 | Winner |
|---|---|---|---|
| Origin | Korea | Singapore | — |
| Distribution | Sole authorised distributor | Direct retail | — |
| Category | Alkaline ionizer | Hot/cold water dispensers | — |
| Plates | 9 | 0 | Prime Water |
| pH (max alkaline) | 11.0 | 8.3 | Prime Water |
| ORP | -728 mV | -150 mV | Prime Water |
| Dissolved H₂ | 1.34 ppm | 0.1 ppm | Prime Water |
| Flow rate | 4.0 L/min | 2.0 L/min | Prime Water |
| Warranty | 5 yr | 2 yr | Prime Water |
| Filter cost (each) | S$ 160 | S$ 180 | Prime Water |
| Sticker price | S$ 2,800 / S$ 99/mo | S$ 1,990 | StarWellness L9 |
| 5-year total | S$ 5,940 | S$ 3,790 | StarWellness L9 |
| Our rating | 4.7/5 | — | — |
Verdict
Cost over 5 years: StarWellness L9 saves S$ 2,150 over 5 years.
Lab performance: Prime Water produces 1.34 ppm dissolved H₂; StarWellness L9 produces 0.1 ppm. The Prime Water leads on hydrogen output.
Warranty: Prime Water carries a 5-year warranty; StarWellness L9 carries 2. Prime Water wins on coverage.
What we recommend: Prime Water (Sole-distributor Korean ionizer, 5-year warranty, no MLM markup). We disclose owning this brand — the numbers above support the verdict, you can replicate any of them with the published methodology.
Where to buy + showroom info
Prime Water
Sole authorised distributor
Showroom: Singapore · by appointment via primewater.com.sg
Lineup: L Series · R Series · LV Series · RV Series
Visit Prime Water →Read our full review →
StarWellness L9
Direct retail
Phone: +65 9835 0639
Lineup: L9 Wall Mount (new launch) · Aquatal Hot & Cold
Visit StarWellness →No affiliate links · Waterionizer.sg earns zero from either purchase.