The short answer
The Echo Flask was tested by H2 Analytics, a third-party hydrogen testing lab in Las Vegas. Using gas chromatography on distilled water, the lab measured 6.07 mg/L of dissolved hydrogen after a 10-minute cycle and 8.25 mg/L after 20 minutes (report H2AR-250116-1, January 16, 2025). For water, mg/L is the same as parts per million (ppm). Read the full report.
Why 8 ppm is unusual
At normal air pressure and room temperature, water can hold about 1.6 ppm of hydrogen. That is the saturation point. Concentrations above it are possible only while the hydrogen is held under pressure, as it is inside a sealed bottle during and right after a cycle. Once the bottle is opened, the concentration starts to fall back toward and below saturation, because hydrogen escapes into the air.
How the measurement was made
- Method: gas chromatography, which separates and measures the hydrogen gas in a water sample.
- Water: distilled water. Tap or mineral water can give different results.
- Cycles: one reading after a 10-minute cycle and one after a 20-minute cycle.
What the report does not show
The report gives the concentration at the end of a cycle. It does not show how quickly the hydrogen escapes after you open the bottle; measurements at 0, 5, 15 and 30 minutes after a cycle have not been published yet. The practical advice is simple: drink soon after the cycle ends and keep the cap closed between sips.
How this compares with the research
In the human trials of hydrogen water that report a concentration, about half used water with 0.5 to 1.6 ppm, and most of the rest used more. You can see the studies and their doses at Hydrogen Studies, the research database Echo funds. No study has shown that more hydrogen is better beyond the ranges trials have used.
What "certified" means here
It means a named lab tested the Flask with a stated method and published a dated report you can read. It is not a medical claim, and hydrogen water is not a treatment for any disease.
For a brand-neutral checklist of what to look for in any hydrogen device, see the hydrogen device guide.