NPL, in collaboration with international partners, has
developed an ISO/IEC standard, ISO/TS 21356-1:2021, for measuring
the structural properties of graphene, typically sold as powders or
in a liquid dispersion. The ISO/IEC standard allows the supply
chain to answer the question ‘what is my material?” and is based on
methods developed with The University of Manchester in the NPL Good
Practice Guide 145.