How to Test 100% Cotton: Simple Methods Explained

Learn how to accurately test if fabric is 100% cotton using burn tests and label checks.

Published Jul 20, 2025

Overview

In this informative video titled 'How do you test 100% cotton?', viewers learn practical techniques for identifying pure cotton fabric. Understanding the qualities of cotton is essential for consumers seeking high-quality textiles for clothing and home furnishings. This video discusses reliable testing methods, including the burn test, which reveals the true nature of the fabric, and emphasizes the importance of checking labels and certifications, such as OEKO-TEX, to ensure authenticity. By enhancing your fabric knowledge, you can make informed purchasing decisions.

Video transcript

To test 100% cotton, perform a burn test. Cut a small fabric piece and burn it. Pure cotton burns like paper, smells like burning paper, and leaves a soft, gray ash. Alternatively, check the label and look for certifications like OEKO-TEX.

Questions and answers

What is the burn test for cotton?
The burn test for cotton involves cutting a small piece of the fabric and lighting it on fire. Pure cotton burns like paper, produces a smell similar to burning paper, and leaves behind a soft, gray ash.
How can I identify 100% cotton without burning it?
You can check the label on the garment for fiber content and look for certifications like OEKO-TEX, which ensures the fabric is free from harmful substances.
What are the characteristics of pure cotton fabric?
Pure cotton fabric is soft, breathable, absorbent, and has a natural feel. It is also biodegradable and does not irritate the skin.
Why is it important to test for pure cotton?
Testing for pure cotton is important to ensure the authenticity of the fabric, as blends with synthetic fibers can affect breathability, comfort, and overall quality.