Cheapest and fastest quality control for graphene oxide helps its characterization for marketing

https://www.eurekalert.org/news-releases/1094269 

"interactional fingerprinting creates unique identity of samples without need for gold-standard measurement machinery manned by teams of specialists... different types of oxygen introduced to single atom graphene flakes makes variable supply even more so, with only small fraction living up to label/ brochure... molecular probing device characterizes at fraction of cost, couple hours (was +-£5,000/ month's time)... series of molecular probes fluoresce until interact with material’s surface... oxygen content, flake size"

Related: Mirror-like graphite films break records in strength and conductivity
https://www.eurekalert.org/news-releases/1094198