Highly effective drain dye. NBS SURIH 100g fluorescent red drain tracing dye are used to trace the direction of water flow in drains, pipes, pools, sewers, toilet, etc. It is highly concentrated, easily soluble and non-harmful.
How to Use
5g of dye can treats up to 100 - 500 litres of cold water.
It is advised to mix the dye in a bucket and then add to the flow of water in the drain or pipe.
Each 100g packet will trace up to 2,000-10,000 litres of chemical free water.