Izibonelelo zayo bubumhlophe obuphezulu, ubunyulu kunye nokungafihli, isiqulatho sentsimbi esisezantsi kakhulu, akukho zintsimbi ezinzima ezikwaziyo ukumelana nobushushu, ukumelana neasidi yealkali, kwaye iyamelana nokubola kwerhasi eyingozi, ukusebenza okuzinzileyo kunye nokugquma okulungileyo.