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Showing posts from August, 2026

Comparison of New and Previous Versions of ISO 2403: Textiles—Cotton fibers—Determination of micronaire value

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The Micronaire value reflects the fineness and maturity of cotton fibers; as a critical intrinsic quality indicator, it is closely linked to the processing and utilization of cotton fibers. In 1972, the International Organization for Standardization (ISO) officially published the test method for Micronaire value: ISO 2403:1972, *Textiles — Cotton fibres — Determination of Micronaire value*. ISO 2403 underwent two subsequent revisions in 2014 and 2021. The latest revised edition, ISO 2403:2021, *Textiles — Cotton fibres — Determination of Micronaire value*, was published on August 27, 2021, superseding ISO 2403:2014. In international trade, given that the Micronaire value serves as a key criterion for assessing cotton quality, the accuracy and consistency of its determination are of paramount importance. Consequently, staying abreast of changes to ISO standards is of significant importance for aligning with international practices and eliminating technical barriers in international tra...

What Is a Carbon Black Content Tester? Types & Testing Methods Explained

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  A carbon black content tester measures the percentage of carbon black (fine black powder after combustion of carbon-containing compounds) present in plastic and rubber through combustion methods. The content tester is used in quality control, laboratory research, and institutional settings to demonstrate ideal results of ISO and ASTM standards. This guide breaks down how a carbon black content tester works, what kind of materials can be tested, and the industrial requirements and specs for purchasing a carbon black content tester. What Is a Carbon Black Content Tester Carbon black is a compound added to polyethylene, polypropylene, and rubber compounds to provide UV protection and reinforce the polymer matrix. The concentration of this carbon black determines how well the matrix performs in outdoor environments. When the carbon black is low, the material can be degraded by UV, and when the amount is in excess, it can affect mechanical properties. Carbon black content tester is a...

Textile Color Theory and Color Difference Evaluation

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  In textile dyeing technology, achieving the desired fabric color involves far more than simply applying dyes to fibers. The final visual appearance of a textile is determined by the combined interaction of light, material structure, human vision, and color measurement standards. Building upon the principles of textile dyeing and coloration processes discussed previously, understanding color perception and color evaluation is equally essential for ensuring dyeing consistency, shade accuracy, and product quality. This article introduces the fundamental principles of color perception, the characteristics of light sources, color classification systems, and modern textile color measurement methods used throughout the textile industry. The Three Essential Elements of Color Perception For an object to appear colored, it relies on the synergistic interaction of three elements—”light source, object, and vision (brain)”—all of which are indispensable: ● Light Source: A light source is a ...