How do l test my washing fastness?

Testing the color fastness of a fabric is an important step in assessing its color fastness and durability. The following is a common testing method for reference:

1. Prepare materials and equipment:

    - fabric samples

    - scraps of fabric (used as control samples)

    - Color fastness test reagents, such as fabric dyeing reagents or pH buffers

    - Lighting equipment, such as artificial light sources or fluorescent lamps

    - Humidity and heat equipment, such as constant temperature and humidity chambers

    - James Peel Tester (Martindale Scratch Tester)

    - Colorimeter or spectrometer

2. Determine test conditions:

    - Select the test time and temperature, the common ones are 40 hours for light test and 24 hours for damp heat test.

    - Determine the humidity and temperature conditions for testing.

    - If there are special requirements, such as color fastness to washing, color fastness to rubbing, etc., the test method should be determined accordingly.

3. Light test:

    - Expose the fabric sample and the control sample to a lighting device and perform the lighting treatment according to the selected test conditions.

    - After treatment, measure the color difference between the fabric sample and the control sample using a colorimeter or spectrometer.

4. Damp heat test:

    - Place the fabric sample and the control sample in the moist heat equipment and perform the moist heat treatment according to the selected test conditions.

    - After treatment, measure the color difference between the fabric sample and the control sample using a colorimeter or spectrometer.

5. James Peel Test:

    - Scratch testing of fabric samples using a James Peel Tester to simulate the friction process.

    - After the test, use a colorimeter or spectrometer to measure the color difference between the fabric sample and the control sample.

6. Comprehensive evaluation:

    - Based on the test results, compare the color difference between the fabric sample and the control sample.

    - Grading color differences into different color fastness levels using relevant standards or guidelines.

It should be noted that this is just a common testing method, and the specific testing steps and parameters may vary depending on the requirements of different industries, products, and standards. Before conducting color fastness testing, it is best to refer to relevant international, national or industry standards to ensure the accuracy and reliability of the test.