2 packs 8.5 MG X 100 Water Purification Tablets NaDCC 1 Tablet = 1-2 litre
£12.94
The World's Favourite Way to Make Water Safe. They are effervescent (self-dissolving) tablets, the US EPA approved active ingredient is NaDCC which is also known as Sodium Dichloroisocyanurate or Troclosene Sodium.
