《C9A colour fastness to wet light》.pdfVIP

Marks Spencer C9A METHOD OF TEST COLOUR FASTNESS TO WET LIGHT IN THE PRESENCE OF ALKALINE OR OTHER CHEMICAL RESIDUES PURPOSE To assess whether items are light fast when tested in the wet state in the presence of residues of detergent or other agencies. APPARATUS 1. Atlas CI3000+ Fade-o-meter and weather-o-meter (see Equipment Index. Ref 24 AN) Appendix II Appollo (see Equipment Index Ref 13BH) and Note 4 Megasol (see note 1) or Xenotest Alpha High Energy (see Equipment Index Reference 1F) or Xenotest 150s+ (see note 1) or Xenotest 150 or Xenotest 150s Light Fastness Tester (see note 1) with a supply of masks ref . HEQ 30035 and HEQ 30036 (see Equipment Index Ref.1G). IMPORTANT: see Appendix for Equipment Setting Conditions 2. British Blue Wool Standards from standard 1 and standard 2. (See Equipment Index Ref. 24Q and 25F). 3. Supply of 25 micron, BH