Developed by the American Testing and Materials Agency (ASTM), the ASTM G21 standard is designed to determine the antimicrobial and antifungal resistance of materials. This standard defines a standard application for determining the resistance of synthetic polymeric materials to fungi.
This antimicrobial test method is used to test how much materials can resist fungal attacks. The ASTM G21 test is mainly applied for the following purposes:
Synthetic polymeric materials are, but are not limited to, the following: paint, plastic, paper, cardboard, dry wall and the like. In addition, these materials can be in different physical forms, such as tubes, rods, films and sheets.
The parts of the materials that are synthetic polymer materials are generally resistant to fungi. This is because the synthetic polymer material itself is not a carbon source that promotes the growth of fungi, or behaves like a carbon source.
Often, plastic materials contain lubricants, colorants and similar components that allow the mushroom to grow.
Therefore, when producing plastic materials, it is important that there are no favorable conditions for microbial or cork production. The ASTM G21 test method determines whether synthetic polymeric materials provide resistance to microbial or fungal infestation under a number of conditions, such as varying temperatures and humidity environments.
The ASTM G21 test method and parameters are designed in such a way that various growth conditions, namely salts, minerals, water and a humid environment are present, together with an adequate source of carbon or sugar. In this way, the real strength of materials against fungal attack is tested.
Our institution also provides businesses with test services for determining fungus resistance.
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