Scope

This standard specifies the size, requirements, testing, judgment rules, product instructions, packaging, transportation, and storage of cotton knitted underwear This standard is applicable to identifying the quality of knitted underwear with a cotton fiber content of not less than 50% This standard does not apply to clothing for infants and young children aged 36 months and below

Normative reference documents

The following: Documents are essential for the application of this document.

. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document

GB/T 250 Textiles - Grey Sample Card for Evaluating Discoloration in Color Fastness Testing

GB/T 1335 (All Parts) Clothing Size

GB/T 2910 (All Parts) - Quantitative Chemical Analysis of Textiles

GB/T 2912.1 Textiles - Determination of Formaldehyde - Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method)

GB/T 3920 Textiles - Tests for Color Fastness to Rubbing

GB/T 3921-2008 Textiles - Tests for Color Fastness to Soap

GB/T 3922 Textiles - Tests for Color Fastness to Sweat

GB/T 4856 Knitted Cotton Crystal Packaging

GB5296.4 Instructions for Use of Consumer Goods - Part 4: Textiles and Clothing

GB/T 5713 Textiles - Tests for Color Fastness to Water

GB/T 6411 Knitted Underwear Size Series

GB/T 6529 Spinning Standard Atmosphere for Moisture Adjustment and Testing of Textiles

GB/T 7573 Textiles - Determination of pH Value of Water Extracts

GB/T 8170 Rules for Rounding off Values and Representation and Judgment of Limit Values

GB/T 8629-2001 Household Washing and Drying Procedures for Textile Testing

GB9994 Common Moisture Return of Textile Materials

GB/T 14801 Test Methods for Weft Inclination and Bow Weft of Woven and Knitted Fabrics

GB/T 17592 Determination of Prohibited Azo Dyes in Textiles

GB18401 National Standard Basic Safety Technical Specifications for Textile Products

GB/T 19976-2005 Textiles - Determination of Breaking Strength - Steel Ball Method

GB/T 29862 Textiles - Identification of Fiber Content

FZ/T 01026 Textiles - Quantitative Chemical Analysis of Four Component Fiber Mixtures

FZ/T 01057 (All Parts) - Textile Fiber Identification Test Method

FZ/T 01095 Textiles - Test Method for Fiber Content of Spandex Products

GSB16-2159 Knitted Products Standard Depth Sample Card (1/12)

Function of testing report:

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

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

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