Nine-volt battery batteries were formerly made in this size. They had higher capacity than the then-standard carbon-zinc types, a nominal voltage of 8.4 volts, and very stable voltage. Once used in photographic and measuring instruments or long-life applications, they are no longer manufactured as mercury is highly toxic and accumulates in the ecosystem, posing a risk to humans and wildlife. Most battery voltage testers and chargers that can also test nine-volt need another snap clip to hold the battery, while cylindrical batteries often share a holder that may be adjustable in size. Because of the proximity of the positive and negative terminals
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