While in historically grown town centres and old housing complexes with a high level of soil sealing you still often find predominantly combined sewer systems with a common drain, new residential areas are usually equipped with separate sewer networks, which will continue to spread over time – also due to changed water resources laws.

In case of installations on separate sewer systems there are quite frequently faulty connections which can be detected quickly and easily by means of Pure dyes. Just flood the dyed water solution into the drain to be examined and check the route via the inspection chamber.

Because of the 100 % natural food-grade ingredients dyes of the Pure series can be dosed to meet every demand – overdosing is not possible.

Depending on the desired intensity 1 to 5 litres of water can be added to 2 g of Pure dye so as to produce between 100 and 500 litres of dye solution with only one plastic jar of Pure dye.