A hard-walled container designed for the safe deposit and collection of biologically or chemically contaminated used sharps; this includes needles, lancets, scalpel blades, cannulae, or other devices that present a hazard to a healthcare worker or patient if they were to inadvertently have bodily contact with the device and cause themselves an injury. This container is typically designed to be puncture resistant, leak-proof, and closable (usually having a lid that cannot be reopened once closed) and is identified with the universal biohazard symbol on its labelling. It is disposed of when filled to the recommended level, typically by incineration.