A washing device comprises a manifold dispenser comprising at least one liquid input and a plurality of liquid outputs that operably direct fluid to contact a plurality of laboratory consumables held by a rack in the washing device, an ultra-violet (UV) light source, and a plurality of fiber optic channels coupled to the UV light source, each of the fiber optic channels extending into a corresponding one of the liquid outputs. The plurality of liquid outputs may each comprise a nozzle having an opening into which a respective one of the plurality of fiber optic channels extends.
