Streamlined measurements using a single instrument and dedicated μStat-i MultiX software

Hydrogen permeation with a single instrument according to ASTM G148

Hydrogen permeation testing is essential for understanding material behavior in applications such as corrosion studies, hydrogen embrittlement, and energy systems. The Devanathan–Stachurski (H-cell) method is a widely accepted approach for evaluating hydrogen transport through metallic sheets and membranes—but accurate detection requires high sensitivity and precise control.

This application note demonstrates how hydrogen permeation measurements can be performed according to ASTM G148 using a single, highly sensitive potentiostat. Hydrogen is generated in the charging cell under controlled electrochemical conditions, diffuses through the test sample, and is detected electrochemically in the oxidation compartment. The resulting anodic current is directly proportional to the hydrogen flux through the material.

To reliably measure the extremely small hydrogen quantities involved, the setup employs two independent, galvanostatically isolated channels operating in floating mode, ensuring accurate detection while sharing a common working electrode. Dedicated μStat-i MultiX software tools further simplify experiment setup, data acquisition, and analysis.

The application note includes a practical study on the hydrogen permeation behavior of different iron sheets, highlighting key instrumental requirements and best practices for reproducible results.

Download the application note to learn how a single-instrument solution simplifies hydrogen permeation studies while delivering sensitive, standards-compliant measurements.

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