A vibration damping device including: first and second mounting members; a main rubber elastic body elastically connecting the two members; and a bracket member fit into the first mounting member. Furthermore, when shifting from the powered-on state to the powered-off state, the communication apparatus sets the registered NFC transmission data in an NFC controller as data that is to be transmitted to an external apparatus such as a mobile terminal via NFC communication. Thereby, a coil antenna can be disposed so that, even when a coil antenna to carry out communications by inductive coupling is disposed overlapping with a memory array region, little interference occurs from a memory array wiring to communications by the coil antenna. Various designs and arrangements for use with a fluid tester, which may be part of a modular fluid tool, are disclosed in accordance with different embodiments. Specifically, antimicrobial catheters and other medical devices manifest antimicrobial properties as a result of the incorporation therein of antimicrobial microcapsules comprising an inorganic antimicrobial agent and a hydrophilic polymer.