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
Centre for Fire, Explosive and Environment Safety processing and storage dumps and the design, testing and evaluation of safe explosive storage houses. Additionally, it trains armed forces personnel and DRDO scientists in the safe use of explosives and ordnance, and enforces compliance of safety rules. Simulation and risk modeling is also carried out, in order to aid in Disaster Management. Environment Safety - CFEES develops treatment and disposal techniques for hazardous Heavy Metal Wastes, as well as Photodegradable Polyethylene for use as packaging material at high altitudes, which prevents the pollution in mountainous areas where the Indian Army operates, such as Kargil and Siachen. CFEES also plays