Full side-by-side
Doulton Ceramic Filter Mfr claim
·
Panasonic TK-AS45 Mfr claim
| Spec | Doulton Ceramic Filter | Panasonic TK-AS45 | Winner |
|---|---|---|---|
| Origin | UK | Japan | — |
| Distribution | Retail · specialty water shops | Major retail (Tangs, Best Denki, Courts) | — |
| Category | Ceramic under-sink filter (NOT a true ionizer) | Entry-level alkaline ionizer | — |
| Plates | 0 | 3 | Panasonic TK-AS45 |
| pH (max alkaline) | 7.4 | 9.5 | Panasonic TK-AS45 |
| ORP | -40 mV | -420 mV | Panasonic TK-AS45 |
| Dissolved H₂ | 0.01 ppm | 0.32 ppm | Panasonic TK-AS45 |
| Flow rate | 1.8 L/min | 2.0 L/min | Panasonic TK-AS45 |
| Warranty | 1 yr | 1 yr | Tie |
| Filter cost (each) | S$ 95 | S$ 160 | Doulton Ceramic Filter |
| Sticker price | S$ 320 | S$ 899 | Doulton Ceramic Filter |
| 5-year total | S$ 1,270 | S$ 2,499 | 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$ 1,229 over 5 years.
Lab performance: Doulton Ceramic Filter produces 0.01 ppm dissolved H₂; Panasonic TK-AS45 produces 0.32 ppm. The Panasonic TK-AS45 leads on hydrogen output.
Warranty: Doulton Ceramic Filter carries a 1-year warranty; Panasonic TK-AS45 carries 1. Same warranty length.
Where to buy + showroom info
Doulton Ceramic Filter
Retail · specialty water shops
Lineup: HIP3 · HCS · HCP · countertop and under-sink ceramic systems
Visit Doulton →Panasonic TK-AS45
Major retail (Tangs, Best Denki, Courts)
Lineup: TK-AS45 (3-plate)
Visit Panasonic →No affiliate links · Waterionizer.sg earns zero from either purchase.