100 OASIS WATER PURIFICATION TABLETS 8.5mg BRITISH PURIFYING TRAVEL EXP 2027. 100x Oasis 8.5mg Water Purification Tablets Each 8.5mg tablet treats 1 litre of suspect water 8.5mg NaDCC per tablet 10 tablets per foil wrapped strip Ideal for camping, caravanning, boating, sailing and water-rower rowing machines. Excellent for emergency preparedness Add one tablet to 1 litter of water, leave 30 minutes before using Expiry date: 01/2027 Made in UK Product Safety Warning May cause an allergic skin reaction. Use biocides safely. Always read the label and product information before use. Very toxic to aquatic life with long lasting effects.