Oasis 167mg Emergency Water Purification Tablets 100 Tablets – Treats 2000 Litres

Amazon.co.uk Price: $3.89 (as of 07/23/2021 22:40 PST- Details) & FREE Shipping.

Each 167mg tablet treats 20-25 litres of suspect water
10 strips of 10 tablets
Excellent for emergency preparedness