Full side-by-side
Coral Premium 9 Mfr claim
·
Doulton Ceramic Filter Mfr claim
| Spec | Coral Premium 9 | Doulton Ceramic Filter | Winner |
|---|---|---|---|
| Origin | Singapore | UK | — |
| Distribution | Direct retail | Retail · specialty water shops | — |
| Category | Hydrogen water + multi-stage filter | Ceramic under-sink filter (NOT a true ionizer) | — |
| Plates | 9 | 0 | Coral Premium 9 |
| pH (max alkaline) | 8.3 | 7.4 | Coral Premium 9 |
| ORP | -120 mV | -40 mV | Coral Premium 9 |
| Dissolved H₂ | 0.1 ppm | 0.01 ppm | Coral Premium 9 |
| Flow rate | 2.2 L/min | 1.8 L/min | Coral Premium 9 |
| Warranty | 2 yr | 1 yr | Coral Premium 9 |
| Filter cost (each) | S$ 160 | S$ 95 | Doulton Ceramic Filter |
| Sticker price | S$ 2,968 | S$ 320 | Doulton Ceramic Filter |
| 5-year total | S$ 4,568 | S$ 1,270 | Doulton Ceramic Filter |
| Our rating | — | — | — |
How we sourced these numbers: All specs are taken directly from each manufacturer's published product page (links at the bottom). We have NOT independently lab-tested these brands — only Prime Water (our own sister brand) is verifiable through primewater.com.sg. Independent lab testing is rolling out through 2026.
Verdict
Cost over 5 years: Doulton Ceramic Filter saves S$ 3,298 over 5 years.
Lab performance: Coral Premium 9 produces 0.1 ppm dissolved H₂; Doulton Ceramic Filter produces 0.01 ppm. The Coral Premium 9 leads on hydrogen output.
Warranty: Coral Premium 9 carries a 2-year warranty; Doulton Ceramic Filter carries 1. Coral Premium 9 wins on coverage.
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 →Doulton Ceramic Filter
Retail · specialty water shops
Lineup: HIP3 · HCS · HCP · countertop and under-sink ceramic systems
Visit Doulton →No affiliate links · Waterionizer.sg earns zero from either purchase.