This invention provides a fuel cell flow field plate or bipolar plate having flow channels on faces of the plate, comprising an electrically conductive polymer composite. The data buffer receives data from the network and stores the data for communication to a delay-sensitive data application. The deactivating continues during the predetermined duration in the presence of a subsequent failure of the sensor during the predetermined duration. The dispenser has a heating element mounted thereto for heating the adhesive. An ultraviolet light source is attached to an internal surface of the housing or an internal surface of the closure element, and the light source sterilizes the fomite enclosed inside the housing by transmitting ultraviolet electromagnetic radiation towards the fomite. The ink composition comprises a pigment, a water-soluble organic solvent, a surfactant, and water, wherein the pigment is dispersible andor soluble in water without a dispersant and the surfactant is an acetylene glycol surfactant.