AATCC 30-2017 Antifungal Activity, Assessment on Textile Materials: Mildew and Rot Resistance of Textile Materials.
2. Principle
2.1 Tests I, II, III and IV can be used, singly or in combination, depending on the type of exposure to which the textile material will be subjected. For example, if the final product will come in contact with soil, Test I, which simulates this ex- posure, can be used; if the finished product will never come in contact with soil or tropical conditions, a much less severe test (e.g., II or III) can be used. Test II is specifically designed for cellulose-containing materials while Test III is for all others. For materials intended for outdoor and above ground use, Test IV can be used. The two important considerations when evaluating textile materials in rela- tion to fungal growth are (1) the actual deterioration of the textile product (rot), and (2) growth not necessarily deteriorating the product, but making it unsightly (mildewy), often with an unpleasant and musty odor.
2.2 Certain pre-exposures of textile products may be needed when specific end-uses are critical (see Appendix A). When the end-use will be in high temper- ature environments and the fungicide may be volatile, a preliminary oven expo- sure may be desired. When the end-use will be in tropical exposures or outside with rainfall present, a leaching exposure should be performed before mildew eval- uation is made. When at all possible, the textile material should be exposed to the expected conditions of use prior to per- forming this test.
3. Terminology
3.1 fungicide, n.—a compound used to kill fungi.
3.2 fungistatic, adj.—inhibiting the growth of fungi or fungal spores without destroying them.
3.3 mildew resistance, n.—in textiles, resistance to development of unsightly fungal growths and accompanying unpleasant, musty odors on textile materials exposed to conditions favoring such growths.
3.4 rot resistance, n.—in textiles, re- sistance to deterioration of a textile material as a result of fungal growth in or on it. NOTE: Such deterioration is normally assessed by measuring loss in tensile strength.
4. Safety Precautions NOTE: These safety precautions are for information purposes only. The precautions are ancillary to the testing procedures and are not intended to be all inclusive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufacturers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommendations. All OSHA standards and rules must also be consulted and followed.
4.1 This test should be performed only by trained personnel. The U.S. Department of Health and Human Services pub- lication Biosafety in Microbiological and Biomedical Laboratories should be con- sulted (see 44.1).
4.2 CAUTION: Some of the fungi used in these tests are allergenic and pathogenic; i.e., capable of infecting humans and producing disease. Therefore, every necessary and reasonable precaution must be taken to eliminate this risk to the laboratory personnel and to personnel in the associated environment. Wear protective clothing, respiratory protection, and impervious gloves when working with the organisms. NOTE: Choose respira- tory protection that prevents penetration by the spores.
4.3 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas.
4.4 All chemicals should be handled with care. 4.5 An eyewash/safety shower should be located nearby for emergency use.
4.6 Sterilize all contaminated samples and test materials prior to disposal.AATCC 30 pdf download.