To dye the given cotton material using reactive dyestuffs with the required percentage of dye.
Recipe for Cold brand Reactive dyes:
Recipe: (Hot Brand Reactive dyes)
The given cotton material is weighted accurately. The dye bath is prepared by pasting the dyestuff with water. The material is then steeped in the dye solution at 40o c for cold brand reactive dye. sodium chloride is added in two portions and dyeing carried for 45minutes at 90o c for hot brand reactive dyes. Then sodium hydroxide is added in two portions and dyed for another 45 minutes. Then it is subjected for soap wash, cold wash with water and it is dried.
The given cotton sample material was dyed with hot brand reactive dye.