How to Identify Textile Fibers Using the Burn Test?

If you want a quick and reliable way to identify different textile fibers, the burn test is one of the most effective methods. By observing how a fiber reacts to flame, you can determine whether it is natural or synthetic and even pinpoint the exact type of fiber.

Why Use the Burn Test

The burn test is useful because each fiber reacts differently to heat:

Flame behavior – How fast it burns, whether it melts, curls, or shrinks.

Smell – Burning fibers release distinctive odors.

Residue – The ash left behind varies in texture, color, and fragility.

How to Perform the Burn Test Safely

Cut a small fiber sample – A few strands are enough.

Use tweezers – Hold the fiber safely away from your hand.

Light a flame – A candle or lighter works.

Observe closely – Watch how the fiber burns, the smell, and the ash left behind.

Extinguish safely – Have water or a fireproof surface nearby.

⚠️ Safety tip: Always perform the burn test in a ventilated area and keep a small amount of fiber for comparison.