Up to 9,000 PPB · manufacturer data

Verifiable with a DPD test · kit ~€20

5-year cell warranty

60-day money-back guarantee

Tracked delivery offered in France

Pay in 4 installments with Klarna

Comparison

The only criterion that matters:
what you can verify.

We do not publish any competitor metrics that we cannot prove. This comparison is based on the specifications advertised by each manufacturer.

A simple principle: concentration is checked with the DPD test. A few drops, the water changes colour, the level is read. Understand the method.

HYDROGENYX Flask vs. Classic H₂ Bottles

HYDROGENYX Flask

Classic H₂ Water Bottle

Stated H₂ concentration (manufacturer)

Up to 9,000 PPB

Model dependent

Verifiable DPD test concentration at home

4th Generation Platinum-Iridium SPE/PEM Cell

Seldom specified

Touchscreen

Depending on model

Wireless charging base included

Depending on model

Cell Warranty

5 years · free replacement (DPD check)

Often limited to 1 year

Trial period

60-day money-back guarantee

Legal right of withdrawal (14 days)

Customer Service

France · response within 24 hours

Often abroad

Pay in 4 installments (Klarna)

Depending on the store
Discover the Flask — $279

Beyond the Canvas

4 differences experienced daily.

A concentration you can check at home

HYDROGENYX: concentration verifiable with the DPD test — the reference colorimetric method. Kit available online (~€20) for home measurement. Competitors: no reported control. Method explained · First use.

5-year cell warranty — the part that matters

HYDROGENYX guarantees the electrolysis cell for 5 years: free replacement if the water is no longer properly enriched (DPD test). 60-day money-back guarantee. Warranties often limited to 1 year elsewhere. Full conditions.

A French brand, after-sales service in France

HYDROGENYX is a French brand. Manufacturing is entrusted to a specialized industrial SPE/PEM partner — and we state that clearly. After-sales service and warranty are managed in France, with a response within 24 business hours. Contact us.

60 days to judge on evidence, not on promises

Tracked delivery offered in France (6 to 10 business days), then 60 days to try the Flask daily. If you're convinced, you keep it; otherwise, return and refund. Delivery · Warranty.

DPD Test

The proof comes in 3 steps.

  1. Order a DPD kit

    DPD reagent for dissolved hydrogen, ~€20 online. The reference colorimetric method.

  2. Pour a few drops

    Fill a glass with water from your Flask, add the reagent: the water will change color.

  3. Read the rate

    Color intensity indicates dissolved concentration. Compare to manufacturer's data: up to ~9,000 PPB.

Understanding the method

Methodology

"You don't have to take our word for it: you can measure the concentration yourself with the DPD test."

HYDROGENYX Team

HYDROGENYX Flask

Measured, not promised.
$279 instead of $348.

Order the Flask — $279
Order the Flask — $279

Free tracked delivery · 60-day satisfaction guarantee or your money back · 5-year warranty · 4× Klarna

The HYDROGENYX Flask is a water preparation device, not a medical device. It does not prevent, treat, or cure any disease.

Questions? FAQ · Warranty · Shipping