Sample Preparation: Before conducting the test, you must prepare the sample to be tested. This includes washing or pre-treating the sample according to standard procedures (e.g. boiling, drying, etc.), as well as cutting or cutting to the proper size and shape. Color Fastness Test Machine Test procedure: Select the appropriate test procedure and follow the standard procedure. During operation, samples should be carefully placed in the test fixture and ensure that they are not twisted or moved. https://www.standard-groups.com/en/News/787.html#m Record data: During the test, key data such as test time, temperature, light source type, humidity, etc. should be recorded. This data will help evaluate the color fastness of the samples.