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

Amazon.co.uk Price: $3.99 (as of 10/17/2021 11:06 PST- Details) & FREE Shipping.

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