Summary

10 IT Essentials: PC Harware and Software Companion GuideThe MSDS contains valuable information such as■■■■■■■■The name of the materialThe physical properties of the materialAny hazardous ingredients contained in the materialReactivity data, such as fire and explosion dataProcedures for spills or leaksSpecial precautionsHealth hazardsSpecial protection requirementsBefore discarding a computer or any of its components, it is necessary to consider safe disposalof each separate component.Proper Disposal of BatteriesBatteries often contain rare-earth metals that can be harmful to the environment. Batteriesfrom portable computer systems can contain lead, cadmium, lithium, alkaline manganese,and mercury. These metals do not decay and will remain in the environment for many years.Mercury is commonly used in the manufacturing of batteries and is extremely toxic tohumans.Recycling batteries should be a standard practice for a technician. All batteries, includinglithium-ion, nickel-cadmium, nickel-metal hydride, and lead-acid, are subject to disposalprocedures that comply with local environmental regulations.Proper Disposal of Monitors or CRTsAlways handle monitors and cathode ray tubes (CRT) with care. Monitors and CRTs store apotentially lethal voltage, even after being disconnected from a power source. CRTs containglass, metal, plastics, lead, barium, and rare-earth metals. According to the U.S.Environmental Protection Agency (EPA), CRTs can contain approximately 4 lb. (1.8 kg) oflead. Monitors must be disposed of in compliance with environmental regulations.Proper Disposal of Toner Kits, Cartridges, and DevelopersUsed printer toner kits and printer cartridges can be destructive to the environment and mustbe disposed of properly or recycled. Some toner cartridge suppliers and manufacturers willalso take back empty cartridges for refilling. There are also companies that specialize inrefilling empty cartridges. Kits to refill inkjet printer cartridges are available, but are notrecommended. The ink can leak into the printer, causing irreversible damage. This can beespecially costly because using refilled inkjet cartridges can void the inkjet printer warranty.