With positive displacement pipetting technology, the Woodpecker automated, non-contact screen optimiser offers simple, reliable and fast set-up of screening plates, with no clogging or cross-contamination. A wide range of fluid viscosities, from as low as 0.5 µL, can be dispensed quickly and easily, directly into crystallography plates, without the need for liquid classification. Optimised screen plates can therefore be set-up in less than 5 minutes with confidence in the accuracy and repeatability of the volumes dispensed.