Imirasire iratangaje mugutanga ibirahuri byijimye kubiciro bidahenze kandi iyi bong ntabwo itenguha.
Iyi moderi ya beaker iroroshye kuyisukura kandi iramba.Ibarafu ya barafu ituma ijosi ryose ryuzura urubura kugirango bikubite neza.
Urufatiro rushimangirwa kubyiyumvo biremereye n'imbaraga ahantu hashobora kwakirwa imbaraga.