Internel 625 Round Baa e boetse e sebelisoa likopo tsa nyutlelie, lits'ebetso tsa motsoako, tsamaisong ea rokete, transia E na le lebaka le letle le ho rekisa ka lebaka la litaba tsa eona tsa nickel tse phahameng. Bar ea 625 e na le khanyetso e ntle ho tikoloho e fapaneng ea acidic e kang nitric, li-hydrocloric le libaka tsa phosphoric. Ntle le moo, li fana ka lintho tsa ts'ireletso, li pota-potiloe ke mabone a Alkali.