Grading textile fastness. Part 2; Development of a new staining fastness formula

In the first paper in this series, the results obtained showeci that the present ISO standard for assessing staining fastness gave a poor performance with the experimental data accumulated. This paper describes the development of new formulae to fit not only the new data sets described earlier but also another set which was used to derive a previous UK staining formula. The results show that the new formulae developed can fit all these data sets very well. It even out-performed the panel of observers from different laboratories.