The four-channel Preddator liquidhandling system can achieve less than 1% CVs at nanoliter volumes. It can achieve 0.69% CVs at 500 nL across 384-well plates, which lets researchers reduce assay reagent volumes. The new system can also pipette difficult-to-dispense substances such as DMSO, oils, detergents, and gels, as well as cells, proteins, and other biological samples. This is due to Preddator’s dispense head, which is designed with a solenoid to work continuously, allowing scientists to leave Preddator unattended when dispensing viscous reagents or cells.