Kunyamula okwana inaimitsidwa zolimba mita, yosavuta kugwiritsa ntchito m'munda vuto.Mitundu yodziwikiratu ndi 0-750mg/L, palibe ma reagents omwe amafunikira, ndipo zotsatira zake zitha kuwonetsedwa mwachindunji ndi spectrophotometry.