A system for automated platelet washing includes a sterile connection for connecting a platelet product container to the system and withdrawing platelet product from the container, a centrifuge bowl, a wash solution source, a platelet additive solution source, and a controller. The centrifuge bowl separates the platelet product into platelets and a supernatant, and is configured to send the supernatant to a waste container. The wash solution source is fluidly connected to the centrifuge bowl and configured to send wash solution to the centrifuge bowl. The platelet additive solution source is fluidly connected to the centrifuge bowl and configured to send platelet additive solution to the centrifuge bowl. The controller controls the operation of the centrifuge bowl, and accelerates and decelerates the centrifuge bowl multiple times to resuspend the platelets within the platelet additive solution, after the platelet additive solution is added to the platelets and the supernatant is sent to the waste container.
