The robot that Labman supplied to Evotec is another example of a fully bespoke system designed around the user requirements. The robot is a typical vial weighing system incorporating an electronic analytical balance and barcode reader. This weighing system differs in that it has a sample tray stacker attached to one end of the robot framework to increase the capacity without significantly increasing the footprint. The stacker has a capacity for up to 40 sample trays. Each tray can hold a number of different sample vial rack formats by means of a dowel system to ensure that the racks are securely locked into place.