What is the AATCC 61 2A method of testing?

AATCC 61 2A is a testing method developed by the American Association of Textile Chemists and Colorists (AATCC) for evaluating the colorfastness to laundering of textile materials. This method specifically focuses on the color change and staining of textile specimens when subjected to multiple washing cycles.

Here is a brief overview of the AATCC 61 2A testing method:

1. Test Specimens: The test specimens used for AATCC 61 2A testing are typically rectangular fabric swatches or textile samples.

1. Sample Preparation: The specimens are prepared by conditioning them in a controlled environment to reach a specific moisture content and equilibrate with the testing conditions.

1. Test Liquor Preparation: A test liquor is prepared, which consists of a specified detergent solution and water. The detergent solution used should conform to the requirements specified in the test method.

1. Test Procedure: The test procedure involves immersing the test specimens in the test liquor and subjecting them to a specified number of washing cycles. The washing cycles usually include a combination of agitation, temperature, and duration, which simulate typical home or commercial laundering conditions.

1. Evaluation: After the washing cycles, the specimens are rinsed, dried, and evaluated for color change and staining. Color change is assessed using a color measurement device or visually compared to a set of standard color references. Staining is evaluated by visually examining the specimens for any transfer of color to adjacent white fabric or staining on the specimen itself.

1. Rating: The results of color change and staining are typically rated on a numerical scale, where higher numbers indicate greater color change or staining. The scale varies depending on the specific version of the AATCC 61 2A method.

The AATCC 61 2A method is widely used in the textile industry to assess the colorfastness of various types of fabrics and textiles to repeated home laundering. It provides valuable information on the color retention and potential for staining of textile materials during washing, helping to determine the suitability and durability of the materials for consumer use.