Aquatabs Water Purification Tablets Packet Contains: 50 Tablets Requires 30 minute contact time with water. No Odour, nor colour, and will not stain plastic bottles. Safe even for adults, children and pregnent women. Effective against giardia, bacteria, and viruses, when directions are followed. Contains sodium dichloroisocyanurate (source of chlorine), certified to NSF / ANSI Standard 60. Approved and used by international aid agencies including: NATO, WHO, Unicef, International Red Cross, Medecins Sans Frontieres, and Oxfam. What they do: Aquatabs water purification tablets make water safe for drinking, cleaning teeth, washing wounds and fruit and vegetables, by killing the water borne organisms that cause stomach disorders such as diarrhoea, cholera, typhoid. How to use: Add 1 tablet to 1 litre of clear water. Leave for 30 mintes before use. Where tere is sediment in the water, allow the water to settle of filter through a fine cloth. The filtered water is then treated. Precautions: Keep out of reach of children. Keep container dry. If tablets are swallowed, seek medical advice immediately and show this packaging. Do not mix with other products. Contact with acids liberates toxic gas. Brand Aquatabs SKU 100267805_NP-1020541185