Midabka birta oksaydhka, sidoo kale loo yaqaan ferric oxide, waa qayb la taaban karo oo lama huraan ah oo loo isticmaalo warshado kala duwan. Sifooyinkeeda gaarka ah iyo midabada firfircoon ayaa ka dhigaya doorasho caan ah oo loogu talagalay codsiyada kala duwan, oo ay ku jiraan dhismaha, rinjiga iyo dahaarka, balaastikada, iyo dhoobada. Marka la eego...
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