Kunyamula okwana inaimitsidwa zolimba mita, yosavuta kugwiritsa ntchito m'munda vuto. Mitundu yodziwikiratu ndi 0-1000mg/L, palibe ma reagents omwe amafunikira, ndipo zotsatira zake zitha kuwonetsedwa mwachindunji ndi spectrophotometry.