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
Safety in Australia codes of practice Codes of Practice are developed to give practical guidance on how the requirements of the Workplace Health & Safety Act 2011 and Workplace Health & Safety Regulation 2011. Codes of Practice are very important documents; The codes of practice are admissible in court as evidence of whether a duty has been complied with. They’ll also provide evidence of what is known about a particular hazard or risk in control measures and can also be relied on determining what is reasonably practicable. Those codes of practice really set the benchmark and you can choose to follow that code