Emeritus Professor David Brynn Hibbert AM FRSN is Emeritus Professor of Analytical Chemistry at the School of Chemistry, UNSW Sydney, Australia. He completed his PhD studies in Chemistry at King's College London and has received awards from the Royal Australian Chemical Institute, the Royal Society of New South Wales, IUPAC and the Australian Government. He recently edited the IUPAC Orange Book, 4th edition. He has published about 320 papers in various journals, six books and eight patents, and serves as the Secretary of the IUPAC ICTNS, and Chair of the IUPAC Subcommittee for Metrology in Chemistry. His research interests include forensic analytical chemistry, chemometrics, electroanalytical chemistry and metrology in chemistry. See https://www.unsw.edu.au/staff/brynn-hibbert.