scope:

This document outlines requirements for sampling from hydrogen refuelling stations for samples taken at the dispenser. The document defines the best practice for sampling at the nozzle of a hydrogen refuelling station as part of the fuelling station acceptance testing, and ongoing operation.

Further, the document describes the minimum safety requirements for sampling.

This document is targeted for the sampling from the hydrogen refuelling station dispenser. Many of the generic requirements within this document are applicable to sampling at other locations within the hydrogen fuelling station, which can be carried out for hydrogen quality assurance, see ISO 19880-8, however, further specific requirements that may be necessary for safe sampling are not addressed in this document.

The intention of sampling hydrogen is to enable analysis against the requirements of ISO 14687, with additional guidance on analytical requirements given in ISO 21087.

This document supersedes, and is an extension to, the guidance published as Annex K of ISO 19880-1:2020.

NOTE Analytical methods are divided into on-line analyses and off-line analyses. On-line analysis allows for real time analysis at hydrogen stations and is not covered in this document.