Category: Dyeing

A dye is a coloring material this is used for presenting colour to exclusive materials or changing the colour of something. Dyes have chromophores and auxochromes which are responsible for their colour and substantivity. Dye, substance used to impart colour to textiles, paper, leather, and different substances such that the colouring isn’t readily altered by washing, heat, light, or different

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  In practice, pH of any liquid can is measured directly by using pH meter. A figure expressing the acidity or alkalinity of an answer on a logarithmic scale on which 7 is neutral, lower values are more acid, and higher values more alkaline. But is a big question what does mean pH? What is the meaning of 5 or

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