Mercury (element) is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps and other devices, though concerns about the element's toxicity have led to mercury thermometers and sphygmomanometers being largely phased out in clinical environments in favor of alternatives such as alcohol- or galinstan-filled glass thermometers and thermistor- or infrared-based electronic instruments. Likewise, mechanical pressure gauges and electronic strain gauge sensors have replaced mercury sphygmomanometers. Mercury remains in use in scientific research applications and in amalgam for dental restoration in some locales. It is also used in fluorescent lighting. Electricity passed through mercury vapor in a fluorescent
International Institute of Risk & Safety Management International Institute of Risk & Safety Management The International Institute of Risk & Safety Management (IIRSM) is a professional membership body for safety practitioners worldwide. It is a registered British Charity (number 1107666) and UK Company limited by guarantee (number 5310696). IIRSM have two main membership streams. A “health and safety practitioner stream”, for those qualified or studying to be health and safety practitioners, and a “specialist stream”, for those who are qualified to degree or NVQ level 4 (or equivalent) and above, in a profession associated with health and safety practice but who hold no health and safety practitioner