This recommendation is an output of a small-scale round-robin test involving three different laboratories from TG2 of the RILEM TC 295-FBB: “Fingerprinting bituminous binders using physico-chemical analysis” concerning the use of ¹H-NMR for fingerprinting of bituminous binders. It demonstrates the full capabilities of ¹H-NMR as a robust characterisation tool for complex organic materials, like bituminous binders, to examine their molecular composition in a reproducible way and with the best possible detail. This recommendation documents the key factors in sample preparation and the sensitivity of data post-processing steps. It concludes with best practices and a case study examining the effect of laboratory ageing on two bituminous binders. Overall, it highlights the potential, to the broader scientific community, of another efficient chemometric tool for bituminous binders. ... Read more