Astm G21, A number in parentheses indicates the year oflast reapproval.

Astm G21, This test method can be used on a wide range of items, including consumer products and building materials for both interior and Accugen provides ASTM G21 fungal resistance testing of polymers, plastics and rubber, evaluating susceptibility to fungal growth in warm, humid environments. This document is a legally binding standard issued by ASTM for testing the effect of fungi on the properties of synthetic polymeric materials. It covers the selection, inoculation, exposure, examination, and rating of specimens, as well as the significance and use of the practice. Changes in optical, mechanical, and electrical properties may be determined by the applicable ASTM methods. Resistance of Synthetic Polymeric Materials to Fungi1 This standard is issued under the fixed designation G 21; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year oflast revision. . (CTL), Pittsburgh, Pennsylvania. Org for public access and information. However, many additives, such as plasticizers, cellulose, lubricants, stabilizers, and colorants that are added to impart desirable characteristics, are very susceptible to microbial growth. The ASTM G21 is a qualitative test that employs a high concentration of spores, from five different fungal species, to determine the resistance of synthetic polymeric materials to fungal growth. These include synthetic polymeric materials in the form of molded and fabricated articles, tubes, rods, sheets and film materials. Test samples showed no visible fungal growth after 28 days of incubation when inoculated with five mold species, indicating the screens do not provide a food source to support mold growth. 1 This practice covers determination of the effect of fungi on the properties of synthetic polymeric materials in the form of molded and fabricated articles, tubes, rods, sheets, and film materials. Fungi are generally not able to break down the main resin component of synthetic polymer to use as a source of carbon (sugar). ASTM G21 is a fungal test for Plastics and Synthetic Polymeric Materials. Aug 28, 2025 · Learn about ASTM G21, the standard test for measuring synthetic polymeric materials' resistance to fungi. Controls with wood and nutrient agar supported heavy fungal growth, confirming the viability When some acrylics, polyvinyl acetates, and alkyds were synthesized in the laboratory, it appeared that the general order of polymer susceptibility to fungal attack evaluated using the ASTM G21-96(2002) “Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi” was acrylics polyvinyl acetates alkyds (Fig. 1. Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi. Once fungi become established by Aug 28, 2025 · Learn about ASTM G21, the standard test for measuring synthetic polymeric materials' resistance to fungi. 1. This document summarizes a fungus resistance test performed on Coulisse screens according to ASTM G21 standards. 04 Committee G03 In stock ASTM G21-09 Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi 1. It covers the procedures, conditions, and criteria for evaluating the optical, mechanical, and electrical changes caused by fungal attack. A superscript epsilon (f) indicates an editorial change since the Home / ASTM D3987 Shake Extraction of Solid Waste with Water Applicability: This procedure applies to leaching of solid waste to obtain an aqueous solution to be used to determine the constituents leached under specific conditions for inorganic parameters of samples received by Conti Testing Laboratories, Inc. A superscript epsilon (f) indicates an editorial change since the ASTM G21 Fungal Testing ASTM G21 is the standard method for determining the resistance of synthetic polymeric materials to fungi. NormSplash Jun 22, 2021 · Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi G0021-15 ASTM|G0021-15|en-US Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi Standard G21 Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi> new BOS Vol. 1) (13). Resource. Jun 22, 2021 · ASTM G21 is a standard method to test the effect of fungi on the properties of synthetic polymeric materials, such as plastics, coatings, and films. 14. Discover its purpose, test procedure, applications, and why fungal resistance matters in industries ranging from construction to medical devices. 04 Committee G03 In stock May 15, 2021 · Document History ASTM G21-15 (2021)e1 May 15, 2021 Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi Jun 22, 2021 · Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi G0021-15 ASTM|G0021-15|en-US Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi Standard G21 Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi> new BOS Vol. A number in parentheses indicates the year oflast reapproval. Dec 31, 2014 · This document is a legally binding standard for determining the resistance of synthetic polymeric materials to fungi, published by the American Society for Testing and Materials in 1990. Determining. 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