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
Risk and Safety Statements in the course of harmonising classification, labelling and packaging of chemicals by introduction of the UN Globally Harmonized System of Classification and Labelling of Chemicals (GHS). The R/S statement code for fuming hydrochloric acid (37%): The corresponding English language phrases: Dashes separate the phrase numbers. They are not to be confused with range indicators. Slashes indicate fixed combinations of single phrases. More detailed hazard and safety information can be found in the material safety data sheets (MSDS) of a compound. Risk and Safety Statements Risk and Safety Statements, also known as R/S statements, R/S numbers, R/S phrases, and R/S sentences,