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Detection of harmful substances in leather and fur

[ 2023-12-05 ]

Leather refers to animal skin that has undergone physical and chemical processes such as hair removal and tanning, and is already denatured and not prone to decay. Leather is composed of natural protein fibers tightly woven in three-dimensional space, with a special grain layer on its surface, which has natural grain patterns and luster, and a comfortable feel. There are two popular types of leather products in the market: genuine leather and artificial leather. Synthetic leather and artificial leather are made from textile or non-woven fabric substrates, coated with polyurethane and treated with special foaming. They have a surface texture similar to genuine leather, but their breathability, wear resistance, and cold resistance are not as good as genuine leather. Today, BAIJIAN will introduce relevant testing knowledge to everyone. BAIJIAN provides authoritative and effective testing reports, mainly covering food, agricultural products, environmental soil, environmental protection, industry standard training, retail services, etc., providing convenient testing services for you. If you need it, you can contact us. Testing scope: Leather chemical raw materials such as fur bedding, fur clothing, fur hats, fur toys, mink products, fox products, etc.: cationic dyes, sulfide dyes, vat dyes, metal complex dyes, ice dyeing dyes, solvent dyes, direct dyes, acid dyes, dispersed dyes, reactive dyes, alkaline dyes, special professional dyes, surfactants, degreasing agents, chrome tanning agents, retanning agents, tanning aids, dyeing aids Fatliquoring agents, coating materials, fur specific materials, etc. Physical performance testing of testing items: tensile strength, elongation, tear strength, tensile strength, shrinkage temperature, crack height, crack strength, leather apparent density, coating folding fastness (room temperature/low temperature), sole folding fastness, water absorption, heat resistance, oil resistance, friction resistance, fur flame retardancy, color fastness to friction, water stains, and sweat stains Color fastness to light Material identification: Material identification (leather, fur, artificial leather, synthetic leather, etc.) Chemical performance testing: pH value, hexavalent chromium content, formaldehyde content, prohibited azo dyes, odor, fur volatile matter content, leather moisture content and volatile matter content determination: formaldehyde content, hexavalent chromium, azo, heavy metals, PCP, TeCP, OPP, free fatty acid content, organic tin compound analysis items: component analysis Toxic and harmful substance testing, environmental protection testing, azo testing

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1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

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5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

100% inspection and testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Testing and testing characteristics:

1. The testing industry is fully covered, meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China

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