Description Drain dye (powder) for tracing the direction of flow or where a drain pipe runs. Orange when added to water. Dye is non-toxic but not recommended for human consumption. Instructions: Dissolve a level tea spoonful (3 to 4g) of the drain tracing dye in 1 litre of water, stir well, then add to or dribble into 25 litres of cold water and pour into cesspool, drain or onto the ground where suspicion of contamination arises. The drain tracing dye will give a coloured tint to any liquid it comes into contact with. Each 200g of drain tracing dye will colour 15-20,000 litres of chemical free water.
