Water purification tablets kill bacteria, viruses & giardia-makes water safe for drinking, brushing teeth, cooking and washing fruits, vegetables and produce.  No unpleasant taste or colour.  Iodine free! Active ingredient (per tablet)is 8.5 mg US EPA approved Sodium Dichloroisocyanurate (NaDCC) equivalent to 5mg/L free available chlorine.  Bilingual package.AQUATABS are safe, internationally recognized water purification tablets that have been tried and tested in a wide range of water sources around the globe. AQUATABS® have been successfully used for water disinfection, often in the most adverse and difficult conditions, by major international aid agencies, militaries and NGO’s including the WHO, UNICEF, MSF, Red Cross, NATO, and French Foreign Legion.