Match the following dye fibre combinations :

a. Cotton	1. Disperse dye
b. Polyester	2. Acid dye
c. Acrylic	3. Reactive dye
d. Silk	4. Basic dye

In the case of reactive dyeing of cotton, the exhaustion is 80% and the reaction efficiency is 80%. Assuming that the initial dye concentration is 2% on the weight of fabric. The amount of un-reacted dye on the fabric expressed as percentage of fabric weight would be

Batch dyeing machine

Printing paste has the property of

Printing of Polyester (PET) with disperse dye

Which of the following one is considered as the main disadvantage of the lea-strength tester ?