Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The H2CAP is a screw-on cap that turns a standard water bottle into a hydrogen water generator. It uses SPE/PEM electrolysis to reach 1,000 ppb or more dissolved molecular hydrogen in about three and a half minutes, with ORP around minus 400 mV. It charges over USB-C and is the cap-format sibling of the H2POD bottle. It suits people who already carry a bottle and want hydrogen water without a second container; rivals in cap form trade the same convenience against lower hydrogen output or slower cycles.
In stockReturn policy
The H2CAP is a portable hydrogen water generator in a cap format. It uses SPE/PEM (solid polymer electrolyte / proton exchange membrane) electrolysis and threads onto a standard water bottle. It comes with a 15.9 oz BPA-free bottle sized to fit the cap.
It produces 1,000 ppb or more of dissolved molecular hydrogen in about 3 minutes 30 seconds, with an ORP around minus 400 mV, depending on the source water. Purified water is recommended for consistent output and less scale buildup on the electrolysis plates. 1,000 ppb equals 1.0 mg/L.
To use it, fill the bottle with purified water and thread the cap on top. Start the cycle. A white LED shows that hydrogen is being generated, and a constant orange LED shows the water is ready to drink. Drink right after generation, since dissolved hydrogen dissipates from the water over minutes to hours. A blinking orange LED means mineral scale has built up on the plates and the device needs a descaling cycle.