The UK speciality chemicals industry lost one of its leading lights on 17 December 2022, when Dr David Karsa passed away after suffering severe organ failure.

A chemist by training, David ran his consultancy, TensioMetrics, from his Stockport home for over 50 years while  writing several well-regarded books on surfactants in the Sheffield Annual Surfactants Review and the Applied Surfactant Series. He also co-authored books on both surfactants and biocides.