The qualification rate is more than 99%!Luoyang primary and secondary school uniforms such as "physical examination"

Entering the new semester, various kindergartens and primary and secondary schools in Luoyang have begun to issue new school uniforms. The reporter from Luoyao Rong Media learned from the Luoyang Market Supervision Bureau that the Luoyang Fiber Inspection Institute, as a legal inspection agency, was responsible for inspection of the quality of school uniforms for inspection. Today, a reporter from Luoyao Rong Media came to the institute's laboratory to reveal the key process of the "physical examination" of school uniforms.

According to the relevant person in charge of the Luoyang Fiber Inspection Office, the school uniform sample inspection adopts the "double inspection" model, that is, the school uniform manufacturers are delivered to the inspection and the school randomly extract school uniform samples for inspection. Since January this year, the institute has inspected 270 batches of school uniform samples, with a pass rate of more than 99%, which basically covers primary and secondary schools in Luoyang City.

According to national standards, the school uniforms of primary and secondary school students who are delivered to the inspection refer to clothing and accessories that are produced by textile fabrics as the main materials and their elementary and middle school students wear them in the school daily. After the sample enters the laboratory, the fiber content, formaldehyde content, pH value, odor, staining fastness/grade, kicking, strong seam strong, after washing the twist rate, rope belt, residual metal needle and other series of a series Project indicators for inspection and testing. Among them, the formaldehyde content, pH value, odor, and dyeing fastness/level are required. It is expected to issue inspection reports in 10 working days.

(School uniform sampling)

■ Inspection items: formaldehyde content

Take the samples that were cut from different parts and different colors, and then picked out the water in 40 ° C water and removed the appropriate amount of solution and put it in the color bottle. Drop a formaldehyde reagent, and then put it in 40 ° C for 15 minutes. Take out the instrument to read the light absorption value.

(Weight)

(Test formaldehyde content)

■ Inspection items: pH value

Take the samples that are cut from different parts and different colors, add 100 ml of water into the bottle, cover the tight bottle plug, shake the bottle to wet the sample, put it in the oscillator for 2 hours, take it out, use pH, use pH Planning testing.

(Sample is cut and add water)

(Full shake)

Explanation: The formaldehyde content of clothing exceeds the standard, and it will stimulate skin mucosa, sensitivity, etc.; Spring and summer school uniforms such as T -shirts, pants, skirts, etc. are all clothes that children wear. The acid -base balance of human skin causes skin diseases. Therefore, these two inspections are the first pass of the school uniform quality "physical examination".

(Put in an oscillator)

■ Inspection items: odor

The main use of the olfactory method is used. The inspector carefully smells the smell of the sample. Whether it has a moldy, high -boiled oil flavor (such as gasoline, kerosene flavor), fishy smell, aromatic hydrocarbon smell, accordingly, it is judged as it is judged as it is judged as as "Smell" and record the odor category. In order to ensure accuracy, two people are generally inspected in a group of people.

Explanation: Normal school uniforms will have a faint fabric taste. If there is an abnormal irritating smell, it is likely to contain volatile harmful substances.

■ Inspection items: dyeing fastness/level

This project mainly includes a variety of categories such as water resistance, sweat resistance, friction resistance, soap resistance, light resistance, and light resistance.

According to different categories, there are also differences in the instruments and methods used in the inspection. Taking friction resistance as an example, the school uniform sample is fixed on the friction tester platform with a clamping device, and then friction with a white dry friction cloth and a white wet friction cloth. Finally Card, the larger the level, the better the friction fastness, and the samples with poor friction fastness will affect its normal use.

Explanation: In daily life, the use of school uniforms is very high, so durability and wearing resistance are an important part of whether the quality of school uniforms pass. In layman's terms, the dyeing fastness/level test is to determine the ability of the school uniform to resist water, sweat, friction, soap washing, sun exposure and sweat stains during use during use.

(Ritual resistance)

[Reminder] What are the precautions for the new school uniform?

According to the national standards of primary and secondary school uniform products, the school uniforms directly contact the skin, and the nominal value of its cotton fiber content should not be less than 35%. At the age of 14 and below, the head and neck rope of students should not have a free end. Other rope bands (such as trousers with ropes) should not exceed 75mm free end.

Relevant personnel of the Luoyang Market Supervision Bureau reminded that after parents and children receive school uniforms, they should pay attention to these aspects-

● Check whether the identification information in the tag and durability tags is comprehensive, and whether there are specifications, product standards, fiber composition and content, washing maintenance method, safety category and other information.

● Open the packaging to check whether the school uniforms have surface defects that affect the appearance, whether each part is symmetrical, whether the sewing is round and firm, and whether the color of the main and auxiliary materials on the color (except for special design), etc. If you are a parent of kindergarten or low -grade children, you must focus on checking the rope belt of the school uniform, especially the head and neck rope belt. Among them, there should be no rope band at the head and neck of children under 7 years old. In the head and neck area of ​​the school uniform, the rope belt that adjusts the size of the clothing should not have a free end. Other rope bands should not have a free end of more than 75 mm. Except for the shoulder strap and neck strap, other rope bands should not use elastic rope bands.

● I smelling the smell of mildew, gasoline, and excessive aroma. It is best to wash it before you wear new clothes. If there is a serious quality problem in school uniforms, you can call the 24 -hour hotline 12315 to report to the market regulatory authorities.

Luo Bao Mercy Reporter Li Lanwen/Photo Correspondent Li Dongma Dan Dan

Source: palm Shang Luoyang

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