· AATCC 147
Scope: The objective is to detect bacteriostatic activity on textile materials. The method is useful for obtaining a rough estimate of activity in that the growth of the inoculum organism decreases from one end of each streak to the other and from one streak to the next resulting increasing degrees of sensitivity.
Test Organisms: Staphylococcus aureus, ATCC 6538; Klebsiella pneumoniae, ATCC 4352; other suitable species can also be used depending on the intended end-use of the test sample.
Parallel Streak works very well for thin woven fabrics. For materials that roll and/or are bulky in construction, the results of these tests are not always conclusive, since the intimate contact with the agar is not possible. In such cases, a quantitative test will give more accurate results.