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used : 10gm mordant used : alum (4%) m: l ratio : 1:40 dyeing: add the bleached coir yarn to the dye bath containing the mordant and set the temperature to 80 o c -85 o c. work the sample for about 55-60 minutes. take out the sample. post treatment: soaping is carried out at 60 o c for 10-15 minutes...