Generally speaking, textile testing is to test the comprehensive performance and overall quality of textile fibers, yarns, fabrics and even garments. The conventional testing items are: fiber content, pH value, formaldehyde content, decomposable carcinogenic aromatic amine dyes, color fastness Spend

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Fiber content

As the name implies, it is to detect the fiber composition and content of textile raw materials. The fiber content of raw materials will directly affect the quality of the finished product. Therefore, the fiber content is the most basic and extremely important item in textile testing.

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Can use test equipment

HD-P306 Martindale Tester

PH

In the textile printing and dyeing process, the dyes are more or less not fully washed or neutralized, resulting in excessive acid and alkali on the fabric, which exceeds the adaptation range of human skin pH, which can easily cause skin itching, allergies, inflammation and other diseases, affecting human health.
In order to improve the safety performance of textiles, the pH value is also an important indicator.
The national mandatory standard GB 18401-2010 "National Basic Safety Technical Specifications for Textiles" has clear provisions:

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Formaldehyde content

In the production of fabrics, in order to achieve the effects of anti-wrinkle and shrink-proof, or to maintain the durability of printing and dyeing, or to improve the feel, it is necessary to add formaldehyde to the auxiliary agent.
Textiles containing formaldehyde will gradually release free formaldehyde when people wear and use it, which will endanger the health of the wearing people. Therefore, the content of formaldehyde is also one of the important indicators for textile testing.

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Decomposable carcinogenic aromatic amine dyes

Refers to dyes synthesized from carcinogenic aromatic amines, that is, what people often call "banned azo dyes."
For textile safety indicators, decomposable aromatic amines are far more toxic and carcinogenic than formaldehyde.
Because formaldehyde has a pungent odor, it is easy to distinguish, and it is easily soluble in water. After consumers buy textiles, they usually wash with water to remove most of the formaldehyde; but after decomposable aromatic amine dyes are made into clothes, they are not only insoluble in water, Moreover, it is colorless and tasteless, indistinguishable from the appearance of textiles.
Only through technical inspection can it be discovered and cannot be eliminated. After this dye comes into contact with human skin, it can cause a variety of malignant diseases, absorb and cause cancer. Therefore, the importance of detecting decomposable carcinogenic aromatic amine dyes can be imagined.

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Color fastness

Whether the dyed fabric can maintain the original color and luster under the influence of various external factors during the use or after dyeing and finishing.
The fastness grade is evaluated according to the discoloration of the sample and the staining of the undyed lining fabric.

Conventional color fastness includes
Color fastness to soaping
Color fastness to water
Color fastness to perspiration
Color fastness to rubbing
Color fastness to light
Color fastness to light and perspiration
The conventional color fastness (except light fastness) has 5 grades, 1 is the worst, and 5 is the best; there are 8 light fastness, 1 is the worst, and 8 is the best.

Can use test equipment

HD-W804 Color fastness abrasion tester