scope:

This part of IEC TS 62607 establishes a standardized method to determine the electrical key control characteristic

- volume resistivity

for powder consisting of graphene-based material like flakes of graphene, few layer graphene and/or reduced graphene oxide after preparation of a sample in pellet form by

- four probe method

using powder resistivity measurement system.

The volume resistivity is a measure of the quality of powder-type graphene products in terms of electrical property and reflects the density-dependency shown in a pellet of powder-type graphene.

The volume conductivity can directly be derived from the volume resistivity.

Typical application areas are industries that use powder-type graphene products for graphene manufacture, potential developers, and users who produce graphene-based products. As the volume resistivity measured according to this document requires the preparation of a sample in the form of a pellet, this document describes in detail

- an apparatus to prepare consistently a test sample, the pellet,

- the preparation of the pellet starting from powder-type graphene,

- the measurement procedure to measure the volume resistivity (or volume conductivity) of the pellet, and

- the data analysis, the interpretation and reporting of the results.