When Should Colour Fastness Testing Equipment Be Used?

Colour Fastness Testing Equipment is commonly used to test the colour fastness of textiles, leather, paints, lacquers, prints, plastics and other materials.

When Should Colour Fastness Testing Equipment Be Used?

1. In production and quality control processes to ensure colour consistency and stability of products.

2. When purchasing textiles to check whether the colour will stain other clothing or skin. 

3. In the field of medical devices, to check whether materials that patients come into contact with can cause pigmentation or staining. 

4. in the office or home, checking the colour fastness of furniture, wallpaper or other decorative items to ensure that they will not fade or discolour over time.

5. In printing and publishing, to check the tonal consistency and gloss of test prints. 

What are the colour fastness testing methods?

1. Dry rubbing: This test method is used to measure the transfer of colour between materials, for example during rubbing between garments. Samples are usually tested in dry conditions and standardised for wear using a machine.

2. Wet rubbing method: similar to the dry rubbing method but using a liquid instead of air to apply pressure and wear between the materials.

3. Light fastness test: This test method is used to test the colour change of a material under light conditions. The sample is usually exposed to fluorescent or other light sources and the change in colour is measured.

4. Washing method: This test method is used to test the colour change of a material in water. The sample is subjected to several rounds of washing, usually by comparing colour concentrations or by using a colorimeter.

5. Sweat test: This test method is used to simulate the colour fastness of a material in a human sweat environment. The sample is exposed to a simulated sweat solution and the colour change can be measured using either a reagent or a colourimeter.

6. Chemical reagent test: This test method uses chemical reagents (e.g. acetic acid, hydrochloric acid, etc.) to test the colour change of the material in different chemical media.

In summary, colour fastness testing equipment can be used when there is a need to ensure colour stability and fastness of a product or material.