Full side-by-side
| Spec | AOX Premium | Coral Premium 9 | Winner |
|---|---|---|---|
| Origin | Singapore | Singapore | — |
| Distribution | Direct retail · e-store + corporate rental | Direct retail | — |
| Category | Antioxidant water dispenser | Hydrogen water + multi-stage filter | — |
| Plates | 7 | 9 | Coral Premium 9 |
| pH (max alkaline) | 10.2 | 8.3 | AOX Premium |
| ORP | -620 mV | -120 mV | AOX Premium |
| Dissolved H₂ | 0.95 ppm | 0.1 ppm | AOX Premium |
| Flow rate | 2.4 L/min | 2.2 L/min | AOX Premium |
| Warranty | 2 yr | 2 yr | Tie |
| Filter cost (each) | S$ 180 | S$ 160 | Coral Premium 9 |
| Sticker price | S$ 1,799 | S$ 2,968 | AOX Premium |
| 5-year total | S$ 3,599 | S$ 4,568 | AOX Premium |
| Our rating | — | — | — |
Verdict
Cost over 5 years: AOX Premium saves S$ 969 over 5 years.
Lab performance: AOX Premium produces 0.95 ppm dissolved H₂; Coral Premium 9 produces 0.1 ppm. The AOX Premium leads on hydrogen output.
Warranty: AOX Premium carries a 2-year warranty; Coral Premium 9 carries 2. Same warranty length.
Where to buy + showroom info
AOX Premium
Direct retail · e-store + corporate rental
Phone: +65 6456 4321 · WhatsApp +65 9271 7505
Lineup: Hot & Cold · Non-Electricity · Compac · PURE · TT Tap (award-winner) · AOX Traveller (portable)
Visit AOX Singapore →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 →No affiliate links · Waterionizer.sg earns zero from either purchase.