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
Clothianidin report it was stated that clothianidin should not present a direct acute or chronic risk to freshwater and estuarine/marine fish, or a risk to terrestrial or aquatic vascular and nonvascular plants. It is considered to be toxic to aquatic invertebrates if disposal of wastes according to disposal instructions are not followed. The Pest Management Regulatory Agency of Canada lists it as "very highly toxic" to aquatic invertebrates, but only slightly toxic to fish. In the 2003 EPA report it was stated that although no water monitoring studies had been conducted, due to the extreme mobility and persistence of clothianidin in