Full side-by-side
| Spec | Coral Premium 9 | Prime Water | Winner |
|---|---|---|---|
| Origin | Singapore | Korea | — |
| Distribution | Direct retail | Sole authorised distributor | — |
| Category | Hydrogen water + multi-stage filter | Alkaline ionizer | — |
| Plates | 9 | 9 | Tie |
| pH (max alkaline) | 8.3 | 11.0 | Prime Water |
| ORP | -120 mV | -728 mV | Prime Water |
| Dissolved H₂ | 0.1 ppm | 1.34 ppm | Prime Water |
| Flow rate | 2.2 L/min | 4.0 L/min | Prime Water |
| Warranty | 2 yr | 5 yr | Prime Water |
| Filter cost (each) | S$ 160 | S$ 160 | Tie |
| Sticker price | S$ 2,968 | S$ 2,800 / S$ 99/mo | Prime Water |
| 5-year total | S$ 4,568 | S$ 5,940 | Coral Premium 9 |
| Our rating | — | 4.7/5 | — |
Verdict
Cost over 5 years: Coral Premium 9 saves S$ 1,372 over 5 years.
Lab performance: Coral Premium 9 produces 0.1 ppm dissolved H₂; Prime Water produces 1.34 ppm. The Prime Water leads on hydrogen output.
Warranty: Coral Premium 9 carries a 2-year warranty; Prime Water carries 5. 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
Coral Premium 9
Direct retail
Showroom: Block 37 Defu Lane 10 #03-41, Singapore 539214
Phone: +65 6239 5335 · Sales +65 8761 6868
Lineup: Premium 9 Slim ($3,413) · 9 H Plus ($4,949) · 9 Compact ($3,168) · 9 H ($2,968) · 7 ($1,968) · 5 ($1,688) · 4 ($949)
Visit Coral Pure Natural Pte Ltd →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 →
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