Floor cleaning apparatus comprises a dispenser for dispensing particulate cleaning material onto a floor surface. The device is suitable for blood analyzers. A user interaction can be conveyed from the device to the modality component for processing. A movable insulated electrode lead arranged inside the lumen, the lumen together with the electrode lead extends longitudinally through said longitudinal structure, the electrode lead has at its distal end an electrical pole. Upon being flushed, the article has an initial neutral buoyancy and subsequently sinks within about 7 days from being flushed. The apparatus includes a transceiver module on the dispenser, wherein transceiver module includes a memory and a RF transceiver.