What is ISO 105-A03 - Greyscale for assessing staining about?
Colour fastness on textile fabrics is a required quality for multiple reasons. Colour fastness to washing or rubbing prevents additional pollution of the water eco-system, reduces wastage, as well as protects the other fabrics from getting stained. In addition, colour fastness on a fabric protects human skin from the chemical dyes. Colour fastness grading is a crucial stage in the quality control of fabrics.
ISO 105-A03 describes the grey scale for determining staining of adjacent fabrics in colour fastness tests, and its use. A precise colorimetric specification of the scale is given as a permanent record against which newly prepared working standards and standards that may have changed can be compared.
Who is ISO 105-A03 - Greyscale for assessing staining for?
ISO 105-A03 on ‘greyscale for assessing staining’ is useful for:
- Textile manufacturers
- Textile testing laboratories
- Product development teams
- Quality control personnel
Why should you use ISO 105-A03 - Greyscale for assessing staining?
Grey scales can be used for assessing colour change and staining during colour fastness testing. ISO 105-A03 specifies the test method for colourfastness by greyscale stain. ISO 105-A03 helps you to evaluate your dyeing processes and it also determine whether the dye, you’re using is durable enough for your products and identify areas of potential process improvement.
The greyscale method described in ISO 105-A03 helps you to mitigate risks associated with crocking and dye leaching. Following ISO 105-A03 guidelines helps you to provide your customers with fabrics and clothes that do not adversely affect their health.
What’s changed since the last update?
BS EN ISO 105-A03:2019 supersedes ISO 105-A03: 1993. BS EN ISO 105-A03:2019 includes some technical changes with respect to ISO 105-A03: 1993. These include:
- The use of grey and black sleeves has been allowed
- A tolerance of ±2 for the Y tristimulus value has been introduced