All fluorescent lamps including CFLs, T12, T8 as well as T5 contain mercury particles. In South Africa is it illegal to dispose of fluorescents in the manner equivalent of disposing, say, your day-to-day refuse.
The government has established that fluorescents must be taken to authorized sites to have proper and environmentally-safe disposal. Once this is done a certificate will be used by the disposal company. Eskom requires this certificate to process through their rebate system.
Other types of lamps and components that should be disposed of are: mercury vapors, metal halides, high pressure sodium, halogens and magnetic ballasts.