Ubwino:
1. Womwa mawere a nkhumba okhala ndi kapu yachitsulo ndi mapangidwe apadera a nkhumba kuti amwe mwaukhondo.
2. Womwa mawere a chitsulo chosapanga dzimbiri ali ndi tsinde, lomwe nkhumba imasuntha poluma kuti itulutse madzi.
3. Chitsulo chosapanga dzimbiri, anti-corrosionndi cholimba, mosalalakupereka madzi aukhondo.
4. Nkhumba ikachotsa pakamwa pake, tsinde limabwerera kumalo otsekedwa.
5. Kuchita bwino kwambiri, kusunga nthawi ndikusunga madzipopanda kutayikira madzi.
