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
Bomb disposal conventional munitions on operations, as well as battle area clearance and High Risk Search in support of improvised explosive device disposal. Royal Engineers providing search advice and assets and Ammunition Technicians and Ammunition Technical Officers of 11 EOD Regiment RLC Royal Logistic Corps providing Improvised Explosive Device Disposal (IEDD), Conventional Munitions Disposal (CMD) and Biological, Chemical Munitions Disposal (BCMD). They also provide expertise in Advanced IEDD and in the investigation of accidents and incidents involving ammunition and explosives, where they are seen as Subject Matter Experts (SMEs). Weapons Intelligence is supplied by Royal Military Police, Intelligence Corps and Ammunition Technical