Izi zimagwiritsidwa ntchito ku mafuta, mankhwala, zitsulo zoyambilira, zogulitsa, zolimbitsa thupi, zokhala ndi dzimbiri - zosavuta kuwononga, kuwonongeka - Acid ndi alkali - kugonjetsedwa, kokhazikika. Pamwamba ntchito ndi yokhazikika, yosalala ndi burr - Zaulere, popanda kukanda, zosavuta kukhazikitsa ndi kugwira ntchito kwambiri.
