Period 6 element 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 alcohol-filled, galinstan-filled, digital, or thermistor-based instruments. It remains in use in scientific research applications and in amalgam material for dental restoration. It is used in lighting: electricity passed through mercury vapor in a phosphor tube produces short-wave ultraviolet light which then causes the phosphor to fluoresce, making visible light. Thallium is a chemical element with the symbol Tl and atomic number 81. This soft gray other metal resembles tin but discolors when exposed to air. The
Asset Disposal and Information Security Alliance Asset Disposal Security Standard is recognized as an industry standard of merit by the UK Defence Infosec Product Co-Operation Group (DIPCOG). Asset Disposal and Information Security Alliance The Asset Disposal and Information Security Alliance (ADISA) is an organization that recommends standards for safely disposing of information technology (IT) equipment while minimizing the risk of exposure and misuse of any sensitive data stored on that equipment. The ADISA standards cover all phases of IT asset disposal including the collection, transportation, storage, erasure or destruction of components containing data, and recycling or waste disposal. Certification included periodic audits. Founded in 2010, the