Olw’okuba zaabu ne ffeeza birina eby’obutonde n’eby’obutonde ebinywevu era nga biriwo ng’ebintu ebyangu mu butonde, okukola zaabu ne ffeeza ebirongoofu ennyo tekyetaagisa bukodyo buzibu. N’olwekyo, zazuulibwa nga bukyali nnyo ne zikozesebwa ng’ensimbi mu kukola emirimu. Ekiseera bwe kigenda kiyitawo, ffeeza gwe tusanga mu bulamu obwa nnamaddala takyali ffeeza mulongoofu yekka. Abantu bakozesezza obuyiiya bwabwe okutabula ffeeza n’ebintu ebirala, ne bamuwa ebirungi bingi, gamba ng’okwongera okukaluba n’okugumira omukka. Leero waliwo ebika bya ffeeza bingi ebiri ku katale, omuli ffeeza omulongoofu 10,000, ffeeza 990, ffeeza 925, ffeeza wa Thailand, ffeeza wa Miao, ffeeza ow’e Tibet n’ebirala.
Bwe kituuka ku ffeeza, ffeeza omulongoofu y’atera okusooka okujja mu birowoozo, naye mu kiseera kino ffeeza 925 y’asinga okwettanirwa. Wadde nga ffeeza omulongoofu amanyiddwa nnyo, era abaana n’abakazi bangi bambala obukomo obukoleddwa mu ye, naye era alina ebizibu byayo, gamba ng’okutera okufuuka omukka (oxidize) n’obutakakanyala. N’olwekyo, ffeeza omulongoofu gwe tulaba mu bulamu obwa bulijjo asinga kuba bukomo. Olw’okuba obukomo buwanvu ekimala, wadde nga ffeeza omulongoofu mugonvu nnyo, tebujja kuvunda ng’okwatako akatono.
Kyokka ffeeza omulongoofu tasaanira bintu biweweevu, gamba ng’empeta. N’olwekyo, abantu abakola baakozesa obuyiiya bwabwe okutabula ffeeza n’ebintu ebirala okwongera ku bugumu bwe. 925 ffeeza akolebwa nga bongerako ebyuma ebirala, ekifuula ffeeza 92.5% ate ebyuma ebirala 7.5%. Kino kifuula ffeeza okukaluba okusobola okukozesebwa mu by’okwewunda ebimu ebirungi.
