Plasma indicators

metallic coating on the treated surface
A liquid metal compound is used as the indicator, which decomposes in the plasma, leaving a shiny metallic coating on the treated surface.
The polyamide surface on the right shows the freshly applied drops of plasma indicator metal compound.
 On the left, the pure gold-coloured metal after plasma treatment can be seen.
Here the metal compound plasma indicator is applied to a polyamide surface: The image on the right shows the freshly applied drops of the solution and on the left the pure, gold-coloured metal after plasma treatment.
Indicator tag, specially coated films
Plasma indicator tags are specially coated films, which are applied on the component to be treated during the plasma process.

What are plasma indicators?

Plasma indicators are simple and fast test methods for the detection of successful plasma processes.

If component surfaces after plasma treatment do not demonstrate the desired properties, expensive complaints can quickly result. However, there are simple methods with which a successful plasma process can be detected, without great expenditure of time.

Why are they applied?

For process control of the following plasma processes: Cleaning - activating - etching

What types of indicators are there?

Plasma indicator (liquid)

The plasma indicator-metal compound from Diener electronic offers users of plasma systems the possibility to see at a glance whether the applied plasma treatment has successfully occurred. The indicator consists of a liquid metal compound, which decomposes in the plasma. If a drop of this originally colorless liquid is applied on the component itself or a reference sample, it will transforms during the plasma treatment into a shiny metallic coating, which provides a clear contrast for most surfaces.

For more information about plasma indicator (liquid), see here.

Plasma indicator tags

The coated film on the label is characterized by a dark (brown) indicator point, which disappearsin the successful plasma process. If no indicator point can be seen, the cleaning - activation - etching has beensuccessfully carried out.

Atmospheric Pressure Plasma Indicator


Plasma Indicator

Plasmaindicators are adhesive labels equipped with a special textile.If the plasma process succeeds, the textile dissolves. This is the first time that a successful plasma treatment can be demonstrated at a glance. Until now, this was only achieved with a high technical effort.

Functional Principle

The adhesive label is adhered to a component or dummy. This is exposed as a reference to the plasma jet, but the indicator has no effect on the actual plasma process or on the component itself. During the treatment, the textile will be destroyed.


Our atmospheric plasma systems, for example the PlasmaBeam Standard with a power of 300 W, completely destroy the textile during the plasma treatment at over 500 m / s and thus prove the successful plasma Treatment.

Labeling Field

The adhesive label has a labeling field, which makes it possible to mark the date and time of the plasma process accurately.


The atmospheric pressure plasma indicators can be used for the following


  • Prove successful treatment on component
  • Adjust the optimum treatment distance and the optimum processing speed
  • Test the function of the atmospheric pressure plasma system

The question frequently arises of how to show that a plasma process has been successful. The functionality of the atmospheric pressure plasma system can be detected by the indicator. For this, the plasma indicator is exposed to the PlasmaBeam during the treatment. In the case of a successful process with an optimal treatment distance, an optimal processing speed and a functioning plasma nozzle, the textile is completely destroyed and thus the surface change is detected.




instruction for use plasma indicators