Disinfectant resistance

We test your coating materials

In times like these, hygiene is more in focus than ever. This means that coating materials and coated surfaces have to withstand another influence: Disinfectants.

There are a variety of disinfectants on the market, differing in their active ingredients, mixtures and concentrations. Some of the ingredients can cause damage, embrittlement or even destruction of coated surfaces. To find out how resistant an article is, it is therefore essential to test it with different disinfectants.

Different agents

It is not always clear which substance the item will be exposed to later and which active substances will lead to a change. For this reason, the Robert Koch Institute has compiled a list of disinfectants and sorted them according to their groups of active ingredients. Depending on the substance, test parameters such as exposure time or concentration have also been defined. In this way, it is possible to select the agents for testing according to their active substances in order to test resistance in as many ways as possible.

    Our offer

    Testing of resistance according to DIN EN ISO 2812-4 by standardised drop and wipe exposure. The assessment is carried out after the exposure time and includes an evaluation after 24h according to DIN EN ISO 4628-1 and DIN EN ISO 4628-2. We are also happy to test the resistance of an article for your specific disinfectant.

    Basic package (testing of 7 groups of active substances):

    • Aldehydes
    • Per-compounds
    • Quaternary ammonium compounds
    • Phenols & cresols
    • Biguanides
    • Alcohols
    • Active chlorine

    Optional (physical tests after exposure to the disinfectant):

    • Light fastness according to DIN EN ISO 105-B02
    • Permanent buckling behaviour according to DIN EN ISO 32100
    • Tear strength according to DIN EN ISO 13937-2

    Testing criteria

    Attention is paid to possible holes, blistering, a change in the surface and colour as well as any destruction of the textile. The degree of resistance/change is recorded by a corresponding mark. Not every change in an article that has come into contact with disinfectant is immediately visible. Therefore, it makes sense to subject the article to a physical test after appropriate treatment. Depending on the article, a check of the light resistance, the permanent buckling behaviour or other properties may be useful.

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