What does PEM/SPE purity mean for water formats?

Proton conduction occurs in a solid polymer membrane rather than a circulating potassium hydroxide solution, so no caustic electrolyte can be carried into the water.

What equipment formats are used?

Portable bottles with an integrated cell, bench machines with a dedicated dissolution stage, and plumbed systems characterised at a defined tap point.

How should a dissolved concentration be reported?

With the measurement method, the measurement point, the time after production and the container condition. Without those, figures are not comparable.

Production FAQ

Hydrogen Water — Production FAQ

Quick summary

Hydrogen water is a dissolved-hydrogen format created through PEM/SPE electrolysis of deionised water. These answers cover the production side only: generation, purity, dissolution, equipment formats and measurement practice.

PEM/SPE purity ensures no chemical additive enters the water.
Dissolved concentration is the output parameter; it decays after production.
Consumer and industrial applications are documented on the respective domains.

Production questions

How is hydrogen water generated? A PEM/SPE cell splits deionised water; the hydrogen is dissolved into the water volume while oxygen is separated at the membrane and vented.

What does PEM/SPE purity mean? Proton conduction happens in a solid polymer membrane rather than a circulating alkaline solution, so there is no caustic electrolyte to carry into the water.

Why does concentration fall after production? Hydrogen has low solubility in water and escapes to the headspace, so concentration decays with time, temperature and agitation.

What formats exist? Portable bottles with an integrated cell, bench machines with a separate dissolution stage, and plumbed systems characterised at a tap point.

How should output be stated? As a dissolved concentration with a stated measurement method, measurement point and time after production.

Scope of statements

This page describes hydrogen production and dissolution engineering for water formats. It makes no medical, health, wellness, performance, emissions or fuel-saving claim.

Reference material only. CE Global publishes hydrogen production and PEM electrolysis engineering information. Nothing here is a medical, health, performance, emissions or fuel-saving claim.

FAQ

Frequently asked questions.

How is hydrogen water generated?: A PEM/SPE cell electrolyses deionised water; the hydrogen produced is dissolved into the water volume while the oxygen stream is separated at the membrane and vented.
What does PEM/SPE purity mean for water formats?: Proton conduction occurs in a solid polymer membrane rather than a circulating potassium hydroxide solution, so no caustic electrolyte can be carried into the water.
Why does dissolved hydrogen concentration fall after production?: Hydrogen is only sparingly soluble in water and escapes to the headspace, so concentration decays with time, temperature and agitation.
What equipment formats are used?: Portable bottles with an integrated cell, bench machines with a dedicated dissolution stage, and plumbed systems characterised at a defined tap point.
How should a dissolved concentration be reported?: With the measurement method, the measurement point, the time after production and the container condition. Without those, figures are not comparable.

Related CE Global pages