Full side-by-side
| Spec | Prime Water | Takashimaya (multi-brand) | Winner |
|---|---|---|---|
| Origin | Korea | Japan department store | — |
| Distribution | Sole authorised distributor | Department store retail | — |
| Category | Alkaline ionizer | Department store (multi-brand) | — |
| Plates | 9 | 0 | Prime Water |
| pH (max alkaline) | 11.0 | None | Prime Water |
| ORP | -728 mV | None mV | Prime Water |
| Dissolved H₂ | 1.34 ppm | None ppm | Prime Water |
| Flow rate | 4.0 L/min | None L/min | Prime Water |
| Warranty | 5 yr | 1 yr | Prime Water |
| Filter cost (each) | S$ 160 | S$ 150 | Takashimaya (multi-brand) |
| Sticker price | S$ 2,800 / S$ 99/mo | S$ 1,000 | Takashimaya (multi-brand) |
| 5-year total | S$ 5,940 | S$ 2,500 | Takashimaya (multi-brand) |
| Our rating | 4.7/5 | — | — |
Verdict
Cost over 5 years: Takashimaya (multi-brand) saves S$ 3,440 over 5 years.
Lab performance: Prime Water produces 1.34 ppm dissolved H₂; Takashimaya (multi-brand) produces None ppm. The Prime Water leads on hydrogen output.
Warranty: Prime Water carries a 5-year warranty; Takashimaya (multi-brand) carries 1. 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 →
Takashimaya (multi-brand)
Department store retail
Showroom: Ngee Ann City, 391 Orchard Road, Singapore 238872
Lineup: No own-label water ionizer · stocks Panasonic + other appliance brands on Kitchen floor
Visit Takashimaya Singapore →No affiliate links · Waterionizer.sg earns zero from either purchase.