This document specifies the validation protocol of analytical methods used for ensuring the quality of the gaseous hydrogen (H₂) at hydrogen distribution bases and hydrogen fuelling stations for road vehicles using proton exchange membrane (PEM) fuel cells. It also gives recommendations on the calculation of an uncertainty budget for the amount fraction.

This document is established mainly for analysis done in laboratories after the sampling of hydrogen either at hydrogen distribution bases or at hydrogen refuelling stations. The specific requirements for on-line monitoring are not covered by this document.

This document gives a list of suitable analytical techniques used to measure each impurity in hydrogen, according to the specification of hydrogen grade D defined by ISO 14687:—¹⁾.

Moreover, recommendations for keeping the integrity of the sample are also given in order to ensure the quality of the measurement. It also includes the requirements for reporting the analytical results.

Cross References:
ISO 14687
ASTM D7652
JIS K 0512
ISO 12963
JIS B 7956
ASTM D7649
ISO 19880-8
ASTM D7941
ISO 6143
ISO 19880-1
JIS K 0114
JIS K 0303
ISO 3534 (all parts)
ISO 21748
JIS K 0127
ISO/IEC 17025:2017
ISO 6142-1
ASTM D7653
ISO 19229
ISO 6145 (all parts)
ASTM D7675
ASTM D7892
ISO 5725 (all parts)
ISO/TR 15916
ASTM D7607


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