A bath to hold the preparation, attach pipettes and apply agents.
There are three connections for the bath: two blue fluid ones for the solution to come in and go out, and an analog connection to earth it. The bath also knows what solution and preparation (cell culture or tissue slice) it contains. The solution is normally set with tubes and bottles from the setup, but may be set directly if the control parameter userLevel is set to advanced. There is a special user interface component for the bath allowing pipettes to be positioned on the preparation and patches to be made.