Full side-by-side
3M Under-Sink Filter Systems Mfr claim
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Bawell Sapphire / Platinum Mfr claim
| Spec | 3M Under-Sink Filter Systems | Bawell Sapphire / Platinum | Winner |
|---|---|---|---|
| Origin | USA | USA | — |
| Distribution | Retail · home renovation channels | Online import · no SG distributor | — |
| Category | Under-sink filter system (NOT a true ionizer) | Alkaline ionizer (US import) | — |
| Plates | 0 | 9 | Bawell Sapphire / Platinum |
| pH (max alkaline) | 7.4 | 10.5 | Bawell Sapphire / Platinum |
| ORP | -30 mV | -700 mV | Bawell Sapphire / Platinum |
| Dissolved H₂ | 0.01 ppm | 1.15 ppm | Bawell Sapphire / Platinum |
| Flow rate | 2.5 L/min | 2.5 L/min | Tie |
| Warranty | 1 yr | 99 yr | Bawell Sapphire / Platinum |
| Filter cost (each) | S$ 220 | S$ 220 | Tie |
| Sticker price | S$ 450 | S$ 2,900 | 3M Under-Sink Filter Systems |
| 5-year total | S$ 1,550 | S$ 5,100 | 3M Under-Sink Filter Systems |
| 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: 3M Under-Sink Filter Systems saves S$ 3,550 over 5 years.
Lab performance: 3M Under-Sink Filter Systems produces 0.01 ppm dissolved H₂; Bawell Sapphire / Platinum produces 1.15 ppm. The Bawell Sapphire / Platinum leads on hydrogen output.
Warranty: 3M Under-Sink Filter Systems carries a 1-year warranty; Bawell Sapphire / Platinum carries 99. Bawell Sapphire / Platinum wins on coverage.
Where to buy + showroom info
3M Under-Sink Filter Systems
Retail · home renovation channels
Lineup: AP Easy Complete · AP2-C405-G · HCD-2 · Aqua-Pure
Visit 3M Singapore →Bawell Sapphire / Platinum
Online import · no SG distributor
Lineup: Sapphire (7p) · Platinum (9p) · Premier (11p)
Visit Bawell →No affiliate links · Waterionizer.sg earns zero from either purchase.