ISO 22734: the international hydrogen standard

The ISO 22734 standard establishes the minimum design, manufacturing and verification requirements for hydrogen generators using water electrolysis, for industrial, commercial or residential use.

Covered areas

• Electrical safety and insulation.
• Management of flammable gases and prevention of explosive mixtures.
• Minimum purity of produced H₂ (class A, B or C depending on use).
• Marking, labelling and documentation procedures.

Implications for electrodes

Electrodes are part of the stack and must contribute to compliance. Specifically: minimise gas crossover (explosion risk) and maintain steady electrical parameters throughout the lifecycle. Our products are tested according to protocols derived from ISO 22734, and we provide full documentation for customer audits.