Inkjet ink viscosity is a complex topic requiring specialist equipment and techniques to characterise fully. Viscosity is a key parameter mediating drop formation as well as substrate behaviour so is vital to understand in ink development. Mats Larsson from Malvern Instruments will describe the use of characterisation equipment to measure the rheological behaviour of inkjet inks at the IMI Europe Inkjet Ink Development Conference in Lausanne, Switzerland, 15-16 March 2017.