Why should you trust this site?
You probably shouldn't, fully. You should treat us the way you treat any car-magazine review where the publisher also sells cars: take the data, ignore the adjectives, cross-reference with at least one source we don't own.
What we promise is the opposite of what most "independent" review sites do:
- Full ownership disclosed — at the top of every page, in the footer of every page, and on this page. ionizerresearch.com, our nearest analogue, doesn't disclose at all.
- No affiliate commissions — we don't take referral fees from any brand we cover, including our own. If you click through to a competitor and buy, we earn S$0.
- Hard numbers, not adjectives — pH, ORP, H₂ ppm, filter life, total 5-year cost. If a number is bad, it's printed bad. We don't massage data.
- Public methodology — every measurement on this site is described below. Every brand is tested with the same Singapore mains water and the same instruments.
- We say when we don't recommend a brand — including the awkward case where the brand is run by a major Singapore retailer or an MLM with a strong sales presence.
If we ever recommend something that doesn't hold up, email the editorial team with your evidence. We'll either correct the review publicly or explain why we still stand by it. Replies in < 3 working days, signed.
Who actually runs the site
Waterionizer.sg is published and maintained by the editorial team at Prime Water Singapore Pte Ltd. The team has been answering the same buyer questions for years (Is PUB water safe? Which brand should I trust? Why is Kangen so expensive?), and got tired of pointing people at five different forums — so we built a single hub instead.
Why launch it under a separate domain instead of as a page on primewater.com.sg? Because primewater.com.sg is a brand site — its job is to sell Prime Water. This site's job is to help someone decide, even if "decide" means buying a Kangen K8 or a $400 Panasonic from Takashimaya. The split keeps the editorial calls clean.
The conflict of interest, explained plainly
Prime Water — the brand we own — is one of 36 brands we catalogue. We don't crown it #1 overall. Out of the 21-category Arena scoreboard, Prime Water wins 1 category outright (Best published certifications: KFDA + ISO + SGS + KTR) plus the SG-distributed H₂ award. The other 19 awards go to competitors.
- On the 8 "Best for" buyer-profile pages, 3 pick Prime Water and 5 pick competitors — Kemp for non-MLM, Wells for elderly parents, StarWellness for small HDB kitchens, Novita for budget under S$1,500, Kemp again for SG-local brand.
- Kemp wins SG history (38 yrs since 1988). Coral wins widest price ladder. WaterSource wins widest hydrogen lineup. Coway wins rental category. 3M wins under-sink filter. Life Ionizer's M-13 wins residential plate count. We say so on each brand page.
- You should compare us against at least one neutral source — we like Healthline for the medical-claims side, and your own home demo for the taste/feel side. Don't take our word for it alone.
- Compare-site warning: ionizerresearch.com presents as a neutral comparison site, but publicly available WHOIS records and shared editorial patterns suggest a relationship with Life Ionizer. Its rankings consistently place Life Ionizer brand products at the top. We recommend cross-referencing any "Top ionizers" article on that site against independent sources. We flag this on the Life Ionizer review.
How we test
Every machine reviewed on this site is tested with the same methodology — same water source, same instruments, same protocol. Numbers are repeatable; we encourage anyone to replicate them.
Test water
Singapore mains water, drawn from a Bedok-area HDB tap, at 26 °C, between 9am and 11am to control for water-treatment cycling. Pre-tested every session: starting pH 7.8 ± 0.1, starting ORP +312 mV ± 20.
Instruments
- pH: Hanna HI-98129 with two-point calibration before each session
- ORP: Hanna HI-98201, calibrated against Hanna 271 mV reference solution
- Dissolved H₂: Trustlex ENH-2000 with weekly cross-check against a known 1.6 ppm reference sample
- Flow rate: Stopwatch + 1-litre graduated jug, three repeats averaged
Protocol
- Run unit at highest alkaline setting for 60 seconds to clear residual
- Collect 250 mL sample, measure pH within 30 s of collection
- Measure ORP after 60-second probe stabilisation
- Measure H₂ ppm within 90 s of collection (it degasses fast)
- Repeat 3× per setting; report median
What we don't measure
- Health outcomes — we are not a clinic. We don't claim ionized water cures or treats anything. Where we cite health research, we link the underlying study and let you judge.
- Taste / feel — these are subjective; we report what we noticed but rate strictly on the measurements above.
- Long-term reliability — we've only been operating for ~3 years on most units. Where we have failure data, we report it.
Affiliate links + sponsorships
None. No affiliate links anywhere on this site. No sponsored posts. No "thanks to X for sending us this unit" — every unit reviewed was either bought retail, borrowed from a customer of Prime Water, or sent unsolicited by the brand (we declare unsolicited samples on the relevant review).
Corrections
If you see a number that's wrong or a claim that doesn't hold up, please email the editorial team. We post all corrections at the bottom of the affected review with the original wording struck through and the date of the change. We don't silently edit.
Contact the editorial team
Editorial enquiries (corrections, source-verification, adding a missed brand) route via the parent Prime Water Singapore Pte Ltd entity — use the corrections form at primewater.com.sg and mark "editorial / waterionizer.sg" in the subject. We acknowledge within 3 working days.
We deliberately don't surface a separate inbox here — keeping editorial and Prime Water sales channels on one routing system means we can't quietly suppress a correction.