ASTM G21 Test Standard for Determining Fungal Resistance of Synthetic Polymeric Materials

ASTM G21 covers the determination of the effect of molds on the properties of synthetic polymeric materials in the form of molded and fabricated products, tubes, rods, sheets, and film materials. Changes in optical, mechanical and electrical properties can be determined by applicable ASTM methods.

ASTM G21 Test Applicability

Fungi are grown on solid media and a spore suspension is prepared from Penicillium, Aspergillus, Chaetomium, Trichoderma, Aureobasidium, a small volume of the pooled spore preparation is applied directly to the test specimens, the petri dishes are closed and incubated for up to 28 days, samples based on fungal growth after 28 days. A semi-quantitative performance score is awarded.

The ASTM G21 test method tests materials with a wide variety of fungal species, from common environmental fungi to agricultural pathogens and even fungi that produce antibacterial compounds, all with different growth requirements and enzymatic properties.

Values ​​stated in SI units should be accepted as standard. The inch-pound units given in parentheses are for informational purposes only.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.

Our organization, EUROLAB, also provides testing services within the scope of the ASTM G21 test standard for determining the resistance of synthetic polymeric materials against fungi, within the framework of laboratory testing services.