AATCC 147-2016 Test Method for Antibacterial Activity of Textile Materials: Parallel Streak.
0.2 The size of the zone cannot be construed as a quantitative evaluation of antibacterial activity. Treated materials should be compared to an untreated cor- responding material and a material speci- men with known bacteriostatic activity. Report of results will include an observa- tion of zones of inhibition and growth un- der the specimen if present. The criterion for passing the test must be agreed upon by the interested parties. To constitute ac- ceptable antibacterial activity, there must be no bacterial colonies directly under the sample in the contact area. 11. Precision and Bias 11.1 Precision for this test method has not been established. Until a precision statement is generated for this test method, use standard statistical tech- niques in making any comparisons of test results for either within-laboratory or between-laboratory averages.
12 Notes and References
12.1 Publication available from U.S. De- partment of Health and Human Services, CDC/ NIH-HHS Publication No. (CDC) 84-8395; web site: www.hhs.gov.
12.2 Available from Publications Office, ACGIH, Kemper Woods Center, 1330 Kemper Meadow Dr., Cincinnati OH 45240; tel: +1. 513.742.2020; web site: www.acgih.org. 12.3 ATCC is the American Type Culture Collection (USA), P.O. Box 1549, Manassas VA 20108; tel: +1.703.365.2700; fax: +1.703. 365.2701; CIP is the Pasteur Institute Collec- tion (France); DSM is the German Collection of Microorganisms and Cell Cultures (Ger- many); NBRC is the NITE Biological Re- source Center (Japan); and NCIMB is the National Collection of Industrial Bacteria (UK). Equivalent bacteria strains obtained from agencies of the World Federation of Cul- ture Collection (WFCC) may be used by agreement between the interested parties. The strains used in the test shall be documented with their supply source. 12.4 Consistent and accurate testing requires maintenance of a pure, uncontami- nated, non-mutant test culture. Avoid contami- nation by using good sterile technique in plating and transferring. Avoid mutation by strict adherence to monthly stock transfers. Check culture purity by making streak plates periodically and observing for a single species-characteristic type of colonies.AATCC 147 pdf download.