How much to use Use 10ml of Dye per 10 litres of cold water. A 200gram Jar will trace up to 15,000 litres in chemical free water. The best method is to mix the Dye into a bucket of cold water, then add to the flow of water in the drain or pipe. Drain Tracing Dye is supplied in 200gram and 100gram Polyjars. Green Fluoresceine Drain Tracing Dye is also available in a 3 kilo Polyjar.
Dyes are non-toxic and odourless.
They are approved by the National Rivers Authorities, Water Companies and Local Authorities.