Echo Flask review
By Daryna Klochko · Published · Specs checked Oct 14, 2026 · 
Scores 9/10, last of the 5 hydrogen bottles we track. At $299.99 it is the most expensive of the 5 hydrogen bottles, against a category median of $199. Its 6.07 ppm after a 10-minute cycle in the H2 Analytics report is above the 5.09 ppm median of the 5 hydrogen bottles with a lab report. A longer 20-minute run reached 8.25 ppm in the same report.
A long warranty matters: 5 years, under the lifetime category median
- Price
- $299.99
- H2 at 10 min, lab
- 6.07 ppm at 10 min
- Longest cycle, lab
- 8.25 ppm at 20 min
- Bottle
- Warranty
- 5 years
- Returns
- 60 days
Lab report
Third-party lab report by H2 Analytics (report H2AR-250116-1, Jan 16, 2025), published by Echo: 6.07 ppm (mg/L) of dissolved hydrogen after a 10-minute cycle, 8.25 ppm after 20 minutes, in distilled water, mean of three runs per cycle. Open the report (PDF)
Echo figure: Up to 8 ppm (20-minute cycle); up to 6 ppm (10-minute cycle). Brands quote different cycle lengths, so we compare bottles at the 10-minute cycle that every report includes.
A lab report measures dissolved hydrogen in the bottle on test day. It is not a certification and says nothing about health effects. How we score
Specs and sources
Checked Oct 14, 2026 · source under each valueHydrogen
Bottle
Buying
Warranty, returns and shipping
60 days, free return or exchange.
Free shipping in the contiguous US.
Warranty: 5 years. Returns: 60 days, free return or exchange. Shipping: Free shipping in the contiguous US. Source: echowater.com, checked Oct 14, 2026.
Source: echowater.com, checked Oct 14, 2026.
Compared with similar hydrogen bottles
| Model | Price | H2 at 10 min, lab | Bottle | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| Piurify Hydrogenator Bottle | $129.99 | 4.09 ppm at 10 min | Lifetime | 9.75/10 | Check price → | |
| Piurify Hydrogenator Bottle with Handle | $151 | 4.24 ppm at 10 min | Lifetime | 9.75/10 | Check price → | |
| Ocemida Omni | $199 | 5.09 ppm at 10 min | Lifetime (limited) | 9.75/10 | Check price → | |
| Ocemida Nexis | $279 | 8.74 ppm at 10 min | Lifetime (limited) | 9.5/10 | Check price → | |
| Echo FlaskTHIS MODEL | $299.99 | 6.07 ppm at 10 min | 5 years | 9/10 | Check price → |