Effect of liquor ratio on the shade change and cross-staining observed in the ISO 105-C08 test

摘要

The following article is a report of a study carried out under the auspices of the Fastness Tests Committee of the Society of Dyers and Colourists (SDC). It is one of an ongoing series undertaken to develop procedures for the colour fastness testing of textiles internationally, covered by the ISO 105 protocols. It was originally published in the SDC's Coloration Technology journal, and is reproduced with the publisher's permission. Further details on the Fastness Tests Committee and the SDCs many other activities are available on the SDC website: www.sdc.org.uk. The effect of liquor ratio on the amount of cross-staining and shade change in the ISO 105-C08 wash fastness test has been studied in order to improve the correlation between the results from the laboratory test and to those obtained in a domestic washing machine. It has been shown that the correlation obtained for cross-staining but not shade change is improved when the liquor ratio is reduced below the 50:1 currently in use. A revised setting of 20:1 is recommended for an international ring test to confirm repeatability and reproducibility.