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Chemical Test

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Chemical test is yest another type of technical test for identifying the fibers. These test are not intended for general consumer.

Types of Chemical Tests
Stain Test: Also known as the Double barrel fiber identification (DBFI), the test is based on the theory that each fiber has its own distinct two- color reaction when treated with stain.
A fiber will turn to a particular color in the presence of dilute acetic acid and to some other specific color when stained in the presence of a mild alkali.

Solvent Test: The test involves treating the fibers in certain solvents for identifying them. The technical test is becoming difficult to conduct as fibers chemically similar fibers and their blends are being manufactured. There is no individual chemical or solvent test for separating or identifying the fibers in combinations.