Quest’s Aqua Midi Tabs are rapid dissolving effervescent tablets used for treating stored water both quickly and effectively. Just one of these tablets purifies 25L of water once its dissolved making them the most convenient way of purifying stored water. The tablets contain dichloroisocyanurate which is an organic chlorine donor with a strong disinfection capacity and manufactured to strict specifications to ensure an accurate dose. They are so simple and effective to use in a wide variety of situations.