Bolo ea letsopa ea mofuta o mong e boetse e bitsoa libolo tsa ho sefa. E entsoe ka make 20-30% pores kahare ho libolo tsa inert ceramic. Ka hona e ka sebelisoa eseng feela ho ts'ehetsa le ho koahela sekhahla, empa le ho sefa le ho felisa litšila tsa lijo-thollo, gelatin, asphalting, heavy metal le iron ions tse ka tlase ho 25um. Haeba bolo e nang le mafura e behiloe kaholimo ho sekontiri, litšila li hloleha ho tlosoa ts'ebetsong ea pele li ka phatlalatsoa ka masobeng a ka hare ho libolo, moo ho sirelletsang tšusumetso le ho lelefatsa nako ea ts'ebetso ea sistimi. Kaha litšila tse teng ka har'a thepa li fapane, mosebelisi a ka khetha sehlahisoa ka boholo ba sona, pores le porosity, kapa ha ho hlokahala, eketsa molybdenum, nickel le cobalt kapa likarolo tse ling tse sebetsang ho thibela sethothetsi ho chesa kapa chefo.