The Source — the HYDROGENYX Journal
HYDROGENYX Black Friday: why we don't do -40%
Paul Fournier
Black Friday 2026: HYDROGENYX isn't slashing its prices by 40%. Not out of posturing – but out of consistency. The HYDROGENYX Flask is already sold at €239 (instead of €299) all year round, through direct sales, without intermediaries. Dropping prices by another 40% would be admitting that we inflated the price the rest of the year. That’s not our model. Code BLACKFRIDAY10: an additional 10% off the HYDROGENYX Flask, from November 24th to 30th. Here's why.
The right price, all year round
HYDROGENYX is a French brand. Manufacturing is entrusted to a specialized industrial partner, selected after comparison; each batch is checked with DPD reagent (filmed measurement) before being put on sale. After-sales service, warranty, and support are in France. What you pay for funds real things: batch quality control, a 5-year warranty on the cell, 60-day satisfaction guarantee or your money back, and support that responds in French.
The reference price is €299. The selling price is €239. It doesn't change with the seasons: no inflated introductory prices in January to pretend to "discount" in November.
Brands offering -40%: three scenarios
Scenario 1: very high initial margin. Overpriced all year, the real margin is hidden behind the "discount". The true price is the Black Friday price.
Scenario 2: product sourced at the lowest cost. Entry-level cell, economical materials, no concentration measurement. The discount applies to a product whose quality did not justify the initial price.
Scenario 3: deliberate loss-making sales to acquire customers (over-funded model). Lasts a few years before bankruptcy or resale.
None of the three applies to us.
What we offer instead: BLACKFRIDAY10
From November 24th to 30th, 2026 inclusive, use code BLACKFRIDAY10 - 10% off HYDROGENYX Flask, making it €215.10 instead of €239. Payment in several interest-free installments is possible with Klarna. Free standard delivery 6-10 business days (tracked); Express 4-8 days for €10.99.
No giant pre-made surplus stock: if we run out on November 28th, that's it.
To understand what we truly sell
The technical comparison of HYDROGENYX Flask vs. other bottles on the market (advertised concentration, materials, warranty): HYDROGENYX Flask technical comparison.
The 7 criteria to check before buying any hydrogen bottle: 2026 buying guide.
How to measure H₂ concentration yourself - step-by-step DPD method: complete DPD protocol.
HYDROGENYX Flask
The hydrogen ritual, ready in 5 minutes.
Up to ~9,000 ppb of dissolved molecular hydrogen (manufacturer's data), verifiable at home with a DPD test. 400 ml, touch screen, wireless charging base included.
60-day money-back guarantee · 5-year cell warranty · 4× Klarna
The HYDROGENYX Flask is a water preparation device, not a medical device. It does not prevent, treat, or cure any disease.
To go further: the science of hydrogen · the comparison · the FAQ
