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
International Institute of Risk & Safety Management qualifications. In addition, companies or other organizations may be corporate members. Alongside other Health and Safety bodies, IIRSM assisted with the Occupational Safety & Health Consultants Register (OSHCR). IIRSM represents UK health and safety professionals present in over 70 countries. Corporate membership is also available. Applicants following a recognised course of study in preparation for qualifications in health, safety or risk management. Applicants in full-time education or the Armed Forces, who are considering a career in Safety Management. Applicants who are involved in accident prevention and occupational health and safety but who do not qualify for a designated grade of