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Dye-spot test in acc. with DIN EN ISO 2143:2018

The dye-spot test is used to determine the quality of the sealing process of anodised aluminium. The sample is exposed to an acid and then coloured with a dye. If the dye cannot be easily removed, it is an indication for pores in the anodised layer, which have not been sufficiently sealed.

Area of competence

Standards

  • DIN EN ISO 2143

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