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  1. Products & Services
  2. Measuring devices
  3. Leak detection
  4. Tracer dyes

Which dye for which purpose?

Decision support for the selection of tracer dyes

Pure series Uranin Green Uranin Blue Luminat series
100 % food-grade ingredients
Biodegradable, natural metabolism
Harmless for the health of people and animals
Harmful in excessive doses
Capillary flow
Chemical long-term stability for long-term studies
Luminescence through UV light
Vividly coloured (also visible in dark, stagnant water)
Transparent, colour-neutral application
Generally accepted for leak detection or verifying the flow path *
Suitable for detecting pipe bursts *
Suitable for detecting leaky spots in the brickwork *

 * Chemical tracers (marking agents) are potentially toxic – depending on the treatment duration and exposure – hence applications with drinking water or groundwater discharges could be problematic. Based on the situation the natural colours of the Trotec Pure series can provide a deployment alternative that is 100 % organic. Otherwise Uranin Green represents the means of choice, especially for verifying the flow path or leak testing in brickwork. If the tracer must for instance not leave any colour traces on the item and at the same time needs to be chemically stable in the long run, we recommend using the UV fluorescent dyes of the Luminat series or Uranin Blue, which are only visible when irradiated with UV light. Compared to Luminat, Uranin Blue is furthermore characterised by an excellent capillary flow.