This document has been drafted in accordance with the rules of GB/T 1.1-2020 "Directives for standardization — Part 1: Rules for the structure and drafting of standardizing documents".

This document replaces GB/T 21294-2014 "Test methods for physical and chemical properties of garments". Compared with GB/T 21294-2014, the main technical changes, apart from structural and editorial adjustments, are as follows:

— Changed the test method for fiber composition and content (see 4.1; Chapter 7 of the 2014 edition);

— Changed the test methods for colour fastness to washing, dry cleaning, artificial light, hot pressing, splicing dye transfer, combined light and perspiration, and phenolic yellowing (see 4.2.1, 4.2.2, 4.2.7, 4.2.8, 4.2.10, 4.2.12, 4.2.13; 5.2–5.6, 5.8, 5.9 of the 2014 edition);

— Removed the test method for dye migration (see 5.7 of the 2014 edition);

— Added test methods for colour fastness to storage, staining of washing liquid, light‑induced yellowing, and ozone (see 4.2.9, 4.2.11, 4.2.14–4.2.16);

— Changed the test methods for seam slippage, seam strength, back crotch seam strength, pilling resistance, tear strength, tensile strength, peel strength of fusible interlining, and abrasion resistance (see 4.3.1–4.3.5, 4.3.7, 4.3.9, 4.3.10; 9.1, 9.2, 9.3–9.6, 10.5 of the 2014 edition);

— Added test methods for bursting strength, tensile strength of attachments, and resistance to damp heat aging (see 4.3.6, 4.3.8, 4.3.11);

— Changed the test methods for dimensional change, twist after washing, smoothness appearance after laundering, seam smoothness after laundering, and appearance after laundering (see 4.4.1–4.4.3; 8.1, 8.2, 8.5 of the 2014 edition);

— Removed the test methods for smoothness appearance after laundering and seam smoothness after laundering (see 8.3, 8.4 of the 2014 edition);

— Changed the test methods for moisture permeability, moisture absorption and quick drying, water resistance, UV protection, oil repellency, and stain release (see 5.1–5.3, 5.6, 5.7, 5.8; 10.1–10.4, 10.6–10.8 of the 2014 edition);

— Added test methods for thermal insulation, flame retardancy, easy care, wrinkle recovery, antistatic performance, prickle sensation, mosquito repellency, poison repellency, mite repellency, antibacterial performance, deodorant performance, instant coolness upon contact, and electromagnetic shielding performance (see 5.4, 5.5, 5.9–5.19);

— Changed the test methods for banned azo dyes, phthalates, total lead, flammability, extractable heavy metals, flame retardant agents, nonylphenol (NP) and nonylphenol ethoxylates (NPEO) (see 6.1.3–6.1.6, 6.2.1, 6.2.3, 6.2.6; 3.4, Chapter 4, Chapter 6 of the 2014 edition);

— Added test methods for total cadmium, sharpness of accessories, cord and drawstring safety, residual metal needles, nickel release, allergenic dyes, carcinogenic dyes, short‑chain chlorinated paraffins, chlorophenols, perfluorooctane sulfonic acid (PFOS) and its salts and perfluorooctane sulfonyl fluoride (PFOSF), perfluorooctanoic acid (PFOA) and its salts, chlorinated toluenes, polycyclic aromatic hydrocarbons (PAH), solvent residues, and vinyl chloride monomer (see 6.1.5, 6.1.9–6.1.11, 6.2.2, 6.2.4, 6.2.5, 6.2.7–6.2.14);

— Removed the test methods for dye migration, splicing cross‑dyeing, phthalate content, pretreatment of accessories and decorative parts, and alkylphenol (AP) content (see Appendices A–E of the 2014 edition).

Please note that some content of this document may be subject to patent rights. The issuing authority of this document shall not be held responsible for identifying such patent rights.

This document was proposed by the China National Textile and Apparel Council (CNTAC).

This document is under the jurisdiction of the National Technical Committee on Garment Standardization (SAC/TC 219).

Drafting organizations of this document: Shanghai Textile Group Testing Standard Co., Ltd., Fujian Fiber Inspection Center, Guangzhou Inspection and Testing Certification Group Co., Ltd., BVShenmei Commodity Testing (Shanghai) Co., Ltd., Shanghai Institute of Quality Inspection and Technical Research, Joeone Co., Ltd., 361° (China) Co., Ltd., Caizi Garment Co., Ltd., Beijing Product Quality Supervision and Inspection Institute, Shenzhen Institute of Metrology and Quality Inspection, Hangzhou Institute of Testing and Calibration for Quality and Technology, SGS Standard Technical Services (Shanghai) Co., Ltd., Zhejiang Light Industry Products Quality Inspection Research Institute, Intertek Testing Services Guangzhou Branch, Heilan Home Brand Management Co., Ltd., Zhejiang George Bai Garment Co., Ltd., Foshan Nanhai No.1 Industrial Co., Ltd., Baiya Group Co., Ltd., Embry (Shandong) Garment Co., Ltd., Advanced Textile Technology Innovation Center (Jianhu Laboratory), Weihai Textile Group Import & Export Co., Ltd., Zhejiang E‑Commerce Testing Co., Ltd.

Main drafters of this document: Zhou Shuangxi, Yang Xiuyue, Wang Caiyun, Tian Meng, Gao Ming, Zhao Hailang, Lin Luping, He Hualin, Cai Jingjing, Han Jun, Ye Yuhui, Gu Hu, Guo Chuanchuan, Ye Xiangyu, Liu Huili, Li Feng, Chi Ye, Chen Xiaoying, Chen Qingqin, Cao Haihui, Qi Dongming, Wu Liping, Wang Feifei.

Previous editions of this document and the documents it replaces are as follows:

— First published as GB/T 21294‑2007 in 2007; first revision in 2014;

— This is the second revision.

**Test methods for physical and chemical properties of garments**

**1 Scope**

This document specifies the test methods for determining the physical and chemical properties of garment products.

This document is applicable to the inspection of physical and chemical performance technical indicators of garment products made primarily from woven fabrics.

**2 Normative references**

The following documents contain provisions which, through normative reference in this text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.

GB/T 250 Textiles — Tests for colour fastness — Grey scale for assessing change in colour

GB/T 251 Textiles — Tests for colour fastness — Grey scale for assessing staining

GB/T 2910 (all parts) Textiles — Quantitative chemical analysis

GB/T 2912.1 Textiles — Determination of formaldehyde — Part 1: Free and hydrolysed formaldehyde (water extraction method)

GB/T 3917.1 Textiles — Tear properties of fabrics — Part 1: Determination of tear force using ballistic pendulum method (Elmendorf)

GB/T 3917.2 Textiles — Tear properties of fabrics — Part 2: Determination of tear force of trouser‑shaped specimens (Single tear method)

GB/T 3920 Textiles — Tests for colour fastness — Colour fastness to rubbing

GB/T 3921-2008 Textiles — Tests for colour fastness — Colour fastness to washing with soap or soap and soda

GB/T 3922 Textiles — Tests for colour fastness — Colour fastness to perspiration

GB/T 3923.1 Textiles — Tensile properties of fabrics — Part 1: Determination of maximum force and elongation at maximum force using the strip method

GB/T 3923.2 Textiles — Tensile properties of fabrics — Part 2: Determination of maximum force using the grab method

GB/T 4615 Determination of residual vinyl chloride monomer in polyvinyl chloride — Gas chromatographic method

GB/T 4744-2013 Textiles — Water resistance — Hydrostatic pressure method

GB/T 4745-2012 Textiles — Water resistance — Spray rating method

GB/T 4802.1-2008 Textiles — Determination of fabric propensity to surface fuzzing and pilling — Part 1: Circular locus method

GB/T 5455-2014 Textiles — Burning behaviour — Determination of damaged length, afterglow and afterflame time of vertically oriented specimens

GB/T 5711 Textiles — Tests for colour fastness — Colour fastness to dry cleaning using perchloroethylene

GB/T 5713 Textiles — Tests for colour fastness — Colour fastness to water

GB/T 6152 Textiles — Tests for colour fastness — Colour fastness to hot pressing

GB/T 6529 Textiles — Standard atmospheres for conditioning and testing

GB/T 7573 Textiles — Determination of pH of aqueous extract

GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values

GB/T 8427-2019 Textiles — Tests for colour fastness — Colour fastness to artificial light: Xenon arc

GB/T 8629-2017 Textiles — Domestic washing and drying procedures for textile testing

GB/T 8630 Textiles — Determination of dimensional change after washing and drying

GB/T 11039.3-2005 Textiles — Tests for colour fastness — Colour fastness to contaminants — Part 3: Ozone

GB/T 11047 Textiles — Assessment of fabric snag — Mace method

GB/T 12703.3 Textiles — Evaluation of electrostatic properties — Part 3: Electric charge

GB/T 12704.1-2009 Textiles — Test method for water vapour transmission of fabrics — Part 1: Desiccant method

GB/T 12704.2-2009 Textiles — Test method for water vapour transmission of fabrics — Part 2: Water method

GB/T 14576 Textiles — Tests for colour fastness — Colour fastness to light and perspiration

GB/T 14577 Determination of water repellency of fabrics — Bundesmann rain shower test

GB/T 14644 Textiles — Burning behaviour — Determination of burning rate for 45° direction

GB/T 16988 Determination of special animal fiber and wool mixture content

GB/T 17592 Textiles — Determination of banned azo colorants

GB/T 17593 (all parts) Textiles — Determination of heavy metals

GB 18401-2010 National general safety technical code for textile products

GB/T 18412.4-2006 Textiles — Determination of pesticide residues — Part 4: Pyrethroid pesticides

GB/T 18830 Textiles — Evaluation of UV protection

GB/T 18863 Easy care textiles

GB/T 18886 Textiles — Tests for colour fastness — Colour fastness to saliva

GB/T 19976-2005 Textiles — Determination of bursting strength — Steel ball method

GB/T 19977 Textiles — Oil repellency — Hydrocarbon resistance test

GB/T 19981.2-2014 Textiles — Professional care, dry cleaning and wet cleaning of fabrics and garments — Part 2: Procedure for testing performance when cleaning and finishing using perchloroethylene

GB/T 20382 Textiles — Determination of carcinogenic dyes

GB/T 20383 Textiles — Determination of allergenic disperse dyes

GB/T 20384 Textiles — Determination of chlorinated benzenes and chlorinated toluenes

GB/T 20388 Textiles — Determination of phthalates — Tetrahydrofuran method

GB/T 20944.2 Textiles — Evaluation of antibacterial activity — Part 2: Absorption method

GB/T 20944.3 Textiles — Evaluation of antibacterial activity — Part 3: Shake flask method

GB/T 21196.2 Textiles — Martindale method for fabric abrasion determination — Part 2: Determination of specimen breakdown

GB/T 21295 Technical requirements for physical and chemical properties of garments

GB/T 21655.1 Textiles — Evaluation of absorption and quick‑drying — Part 1: Combined test method

GB/T 22702 Measurement method of cords and drawstrings on children‘s clothing

GB/T 22704-2019 Implementation specifications for design and production of children’s clothing to improve mechanical safety

GB/T 23319.3-2010 Textiles — Determination of twist after washing — Part 3: Woven and knitted garments

GB/T 23321 Textiles — Water resistance — Horizontal jet rain test

GB/T 23322 Textiles — Determination of alkylphenols and alkylphenol ethoxylates

GB/T 24121 Detection method for broken needles in textile products

GB/T 24135-2022 Rubber or plastics‑coated fabrics — Accelerated ageing test

GB/T 24253 Textiles — Evaluation of mite repellency

GB/T 24279.1 Textiles — Determination of certain flame retardants — Part 1: Brominated flame retardants

GB/T 24279.2 Textiles — Determination of certain flame retardants — Part 2: Phosphorus‑based flame retardants

GB/T 24346 Textiles — Evaluation of mould resistance

GB/T 28189 Textiles — Determination of polycyclic aromatic hydrocarbons (PAH)

GB/T 29257 Textiles — Assessment of fabric wrinkle recovery — Appearance method

GB/T 29778 Textiles — Colour fastness — Assessment of potential phenolic yellowing

GB/T 30126-2013 Textiles — Evaluation of mosquito resistance

GB/T 30157 Textiles — Determination of total lead and total cadmium content

GB/T 30158 Determination of nickel release from accessories of textile products

GB/T 30669-2014 Textiles — Tests for colour fastness — Colour fastness to light yellowing

GB/T 31126 Determination of perfluorooctanesulfonic acid and perfluorocarboxylic acids in textiles

GB/T 31127-2014 Textiles — Tests for colour fastness — Colour fastness to splicing dye transfer

GB/T 31701-2015 Safety technical code for infants and children textile products

GB/T 31702 Test method for sharpness of accessories on textile products

GB/T 32008-2015 Textiles — Tests for colour fastness — Colour fastness to storage

GB/T 33610.2 Textiles — Determination of deodorant property — Part 2: Detector tube method

GB/T 33610.3 Textiles — Determination of deodorant property — Part 3: Gas chromatography method

GB/T 33615 Test method for electromagnetic shielding effectiveness of clothing

GB/T 35263 Evaluation of instant cool feeling property of textiles

GB/T 35446 Determination of certain organic solvents in textiles

GB/T 35762 Test method for thermal transmission property of textiles — Flat plate method

GB/T 40263 Determination of short‑chain chlorinated paraffins in textiles

GB/T 40271 Identification of textile fibers — Differential scanning calorimetry (DSC)

FZ/T 01057 (all parts) Test method for identification of textile fibers

FZ/T 01101 Determination of fiber content in textiles — Physical method

FZ/T 01118 Evaluation of stain release property of textiles

FZ/T 01144 Textiles — Quantitative analysis of fibers — Near infrared spectroscopy

FZ/T 01158 Determination of fabric prickle sensation — Vibration audio analysis method

FZ/T 30003 Quantitative analysis of hemp/cotton blended products — Microscopic projection method

FZ/T 80007.1 Test method for peeling strength of garments with fusible interlining

FZ/T 80007.3-2006 Test method for dry cleaning of garments with fusible interlining

ISO 17294-2:2016 Water quality — Application of inductively coupled plasma mass spectrometry (ICP‑MS) — Part 2: Determination of selected elements including uranium isotopes

EN 17681-1:2022 Textiles and textile products — Organic fluorine — Part 1: Determination of non‑volatile compounds by extraction method using liquid chromatography

**3 Terms and definitions**

For the purposes of this document, the terms and definitions given in GB/T 21295 apply.

**4 Determination of basic performance**

**4.1 Fiber composition and content**

The fiber composition and content of raw materials used in the finished product shall be tested according to the methods described in FZ/T 01057 (all parts), GB/T 40271, GB/T 2910 (all parts), GB/T 16988, FZ/T 30003, FZ/T 01101, FZ/T 01144, etc.

**4.2 Colour fastness**

**4.2.1 Colour fastness to washing**

The colour fastness to washing of the finished product shall be tested according to the method described in GB/T 3921-2008, using Method A(1).

**4.2.2 Colour fastness to dry cleaning**

The colour fastness to dry cleaning of the finished product shall be tested according to the method described in GB/T 5711.

**4.2.3 Colour fastness to rubbing**

The colour fastness to rubbing of the finished product shall be tested according to the method described in GB/T 3920.

**4.2.4 Colour fastness to perspiration**

The colour fastness to perspiration of the finished product shall be tested according to the method described in GB/T 3922.

**4.2.5 Colour fastness to saliva**

The colour fastness to saliva of the finished product shall be tested according to the method described in GB/T 18886.

**4.2.6 Colour fastness to water**

The colour fastness to water of the finished product shall be tested according to the method described in GB/T 5713.

**4.2.7 Colour fastness to light**

The colour fastness to light of the finished product shall be tested according to the method described in GB/T 8427-2019, using the usual exposure conditions, Method 3, exposed to the first stage.

**4.2.8 Colour fastness to hot pressing**

The colour fastness to hot pressing of the finished product shall be tested according to the method described in GB/T 6152, using the damp pressing method. If the user has special requirements, the supplier and buyer may negotiate otherwise.

**4.2.9 Colour fastness to storage**

The colour fastness to storage of the finished product shall be tested according to the method described in GB/T 32008-2015, using Test Condition 2.

**4.2.10 Colour fastness to splicing dye transfer**

The colour fastness to splicing dye transfer of the finished product shall be tested according to the method described in GB/T 31127-2014, using Method A.

**4.2.11 Staining of washing liquid**

Prepare and wash the specimen according to the method described in GB/T 3921-2008, Method A(1). Then pour the residual washing liquid (after filtering to remove impurities) into a color comparison tube (diameter 25 mm). Use the same soap solution not used for washing and at the same test temperature as the reference. Under a D65 standard light source, with a non‑fluorescent white cardboard as background, assess the staining degree of the washing liquid according to GB/T 251. The white cardboard should be placed tightly against the color comparison tube or a single‑row color comparison tube rack. The assessment shall be completed within 15 minutes after washing.

**4.2.12 Colour fastness to light and perspiration**

The colour fastness to light and perspiration of the finished product shall be tested according to the method described in GB/T 14576.

**4.2.13 Colour fastness to phenolic yellowing**

The colour fastness to phenolic yellowing of the finished product shall be tested according to the method described in GB/T 29778.

**4.2.14 Colour fastness to light yellowing**

The colour fastness to light yellowing of the finished product shall be tested according to the method described in GB/T 30669-2014, with an irradiation time of 12 hours.

**4.2.15 Colour fastness to ozone**

The colour fastness to ozone of the finished product shall be tested according to the method described in GB/T 11039.3-2005. The test chamber temperature shall be (25 ± 2) °C, relative humidity not exceeding 65%. One test cycle (approximately 4.5 hours) shall be performed.

**4.3 Durability performance**

**4.3.1 Seam slippage**

*(Detailed subsections 4.3.1.1 to 4.3.1.4 omitted for brevity — sampling, equipment, test procedure, and result calculation)*

**4.3.2 Seam strength**

*(Detailed subsections omitted for brevity — sampling and test method)*

**4.3.3 Pilling resistance**

**4.3.3.1 Sampling**

Take 5 specimens stepwise from areas without fusible interlining in the finished product. Condition according to GB/T 6529.

**4.3.3.2 Test method**

The pilling resistance shall be tested according to the method described in GB/T 4802.1-2008, using Parameter D. For worsted wool fabrics and worsted wool‑like fabrics, use Parameter E. For woollen fabrics, woollen‑like fabrics, and loose‑structure fabrics, use Parameter F.

**4.3.4 Tear strength**

For denim garments and shirts, tear strength shall be tested according to GB/T 3917.1. For other garments, tear strength shall be tested according to GB/T 3917.2.

**4.3.5 Tensile strength (Breaking strength)**

For denim garments, tensile strength shall be tested according to GB/T 3923.2. For other garments, tensile strength shall be tested according to GB/T 3923.1.

**4.3.6 Bursting strength**

For knitted fabrics of finished products, bursting strength shall be tested according to GB/T 19976-2005, using a spherical push rod of diameter (38 ± 0.02) mm.

**4.3.7 Peel strength of fusible interlining**

The peel strength of fusible interlining in finished products shall be tested according to FZ/T 80007.1.

**4.3.8 Abrasion resistance**

The abrasion resistance of finished products shall be tested according to GB/T 21196.2. The test positions shall be 100 mm upward from the hem of the upper garment, 100 mm upward from the trouser hem, and 100 mm upward from the skirt hem. The load shall be (595 ± 7) g (nominal pressure 9 kPa).

**4.3.9 Snagging resistance**

The snagging resistance of finished products shall be tested according to GB/T 11047.

**4.3.10 Resistance to damp heat aging**

The resistance to damp heat aging of finished products shall be tested according to the method described in GB/T 24135-2022, using Method C, with an aging time of 72 hours. After the test, place at room temperature for at least 1 hour. Under a D65 standard light source, assess the degree of color change and appearance change of the specimen according to GB/T 250.

**4.4 Washing performance**

**4.4.1 Dimensional change rate**

**4.4.1.1 Dimensional change after washing**

The dimensional change after washing of finished products shall be tested according to GB/T 8630. The washing and drying procedures shall be as specified in the product standard or by agreement between relevant parties. If not specified, use GB/T 8629-2017, Type A standard washing machine, washing program 4N (for products containing ≥50% wool or silk, use program 4G; for those marked as hand wash, use program 4H). Drying method shall be Program A. For batch inspection, randomly select 3 finished products, wash once, and take the average of the 3 specimens. If both shrinkage and elongation occur among the 3 specimens, take the average of the 2 specimens that show shrinkage (or elongation) as the final result.

**4.4.1.2 Dimensional change after dry cleaning**

The dimensional change after dry cleaning of finished products shall be tested according to the ordinary dry cleaning procedure (without pressing) in GB/T 19981.2-2014 or the conventional dry cleaning method in FZ/T 80007.3-2006. For batch inspection, randomly select 3 finished products, wash once, and take the average of the 3 specimens. If both shrinkage and elongation occur among the 3 specimens, take the average of the 2 specimens that show shrinkage (or elongation) as the final result.

**4.4.2 Twist after washing**

Finished products shall be tested according to the method described in GB/T 23319.3-2010, using Method B, with washing and drying according to 4.4.1.1. For batch inspection, randomly select 3 finished products, wash once, and take the average of the 3 specimens.

**4.4.3 Appearance after washing**

**4.4.3.1 Sampling**

Before washing, select one sample with a color difference higher than 4‑5 grade compared to the specimen to be washed, to serve as the control (original) for post‑wash color difference evaluation. If the color difference between specimens is not higher than 4‑5 grade, take a small piece of fabric from a part of the specimen that does not affect the garment structure as the control.

**4.4.3.2 Color difference evaluation**

After washing and drying according to 4.4.1, evaluate the color change grade of the specimen compared to the control using GB/T 250.

**4.4.3.3 Appearance quality evaluation**

Appearance quality after washing shall generally be evaluated under lighting with an illuminance not less than 600 lx. If possible, north sky light may also be used. The distance between the observer‘s eyes and the specimen shall be about 60 cm. Spread the washed and dried specimen flat and evaluate visually. At least two inspectors are required. If their results differ, a third inspector shall participate, and the result agreed by two inspectors shall be the final result.

**5 Determination of functional performance**

**5.1 Moisture permeability**

For coated products, moisture permeability shall be tested according to the method described in GB/T 12704.2-2009, using Method A, condition group a). For other coated and other products, moisture permeability shall be tested according to GB/T 12704.1-2009, condition group a).

**5.2 Moisture absorption and quick drying**

The moisture absorption and quick drying properties of finished products shall be tested according to GB/T 21655.1.

**5.3 Water resistance**

Water resistance shall be tested using one of the following methods:

- Method 1 (Spray rating): GB/T 4745-2012, water temperature (20 ± 2) °C.

- Method 2 (Hydrostatic pressure): GB/T 4744-2013, water temperature (20 ± 2) °C.

- Method 3 (Horizontal jet rain test): GB/T 23321, water temperature (20 ± 2) °C, test pressure 610 mm.

- Method 4 (Bundesmann rain shower test): GB/T 14577.

Washing method: GB/T 8629-2017, Type A standard washing machine, washing program 4N, one dose of detergent, three consecutive washing cycles (or as agreed by relevant parties). After consecutive washing, dry using Program F.

**5.4 Thermal insulation performance**

The thermal insulation performance of finished products shall be tested according to GB/T 35762.

**5.5 Flame retardancy**

The flame retardancy of finished products shall be tested according to GB/T 5455-2014, using Condition A.

**5.6 UV protection**

The UV protection performance of finished products shall be tested according to GB/T 18830.

**5.7 Oil repellency**

The oil repellency of finished products shall be tested according to GB/T 19977.

**5.8 Stain release**

The stain release performance of finished products shall be tested according to FZ/T 01118.

**5.9 Easy care**

For easy care performance, test according to 4.4.1.1, add one dose of detergent, wash for 5 consecutive cycles, then dry using Program A, and test according to GB/T 18863.

**5.10 Wrinkle recovery**

The wrinkle recovery of finished products shall be tested according to GB/T 29257.

**5.11 Antistatic performance**

The antistatic performance of finished products shall be tested according to GB/T 12703.3.

**5.12 Prickle sensation**

The prickle sensation of finished products shall be tested according to FZ/T 01158. Test both warp and weft directions separately, and take the larger average value as the final result.

**5.13 Mosquito repellency**

The mosquito repellency of finished products shall be tested according to GB/T 30126-2013, using the repellent testing device method.

**5.14 Mould resistance**

The mould resistance of finished products shall be tested according to GB/T 24346, using either Method 1 (Petri dish method) or Method 2 (Hanging method).

**5.15 Mite repellency**

The mite repellency of finished products shall be tested according to GB/T 24253, using either Method 1 (Repellent method) or Method 2 (Inhibition method).

**5.16 Antibacterial performance**

Antibacterial performance shall be tested using either:

- Method 1: GB/T 20944.2 (Absorption method)

- Method 2: GB/T 20944.3 (Shake flask method)

**5.17 Deodorant performance**

Deodorant performance shall be tested using either:

- Method 1: GB/T 33610.2 (Detector tube method)

- Method 2: GB/T 33610.3 (Gas chromatography method)

**5.18 Instant cool feeling**

The instant cool feeling of finished products shall be tested according to GB/T 35263.

**5.19 Electromagnetic shielding**

The electromagnetic shielding performance of finished products shall be tested according to GB/T 33615.

**6 Determination of safety performance**

**6.1 Basic safety performance**

**6.1.1 Formaldehyde content**

Formaldehyde content shall be tested according to GB/T 2912.1.

**6.1.2 pH value**

pH value shall be tested according to GB/T 7573.

**6.1.3 Banned azo dyes**

Banned azo dyes shall be tested according to GB/T 17592.

**6.1.4 Phthalates**

Phthalates shall be tested according to GB/T 20388.

**6.1.5 Total lead and total cadmium**

Total lead and total cadmium shall be tested according to GB/T 30157.

**6.1.6 Flammability**

Flammability shall be tested according to GB/T 14644.

**6.1.7 Odor**

Odor shall be tested according to 6.7 of GB 18401-2010.

**6.1.8 Tensile strength of attachments**

The tensile strength of attachments shall be tested according to Appendix A of GB/T 22704-2019. Test 5 specimens per type of attachment; each individual value shall meet the requirement. If less than 5 specimens of one type exist, test all available specimens.

**6.1.9 Sharpness of accessories**

The sharpness of accessories shall be tested according to GB/T 31702.

**6.1.10 Cord and drawstring safety**

Cord and drawstring safety shall be tested using either:

- Method 1: According to 5.7 of GB 31701-2015

- Method 2: According to GB/T 22702

**6.1.11 Residual metal needles**

Residual metal needles shall be tested according to GB/T 24121. Detection sensitivity (standard iron ball test card): 1.0 mm.

**6.2 Other safety performance**

**6.2.1 Extractable heavy metals**

Test methods for extractable heavy metals are specified in Table 5.

**Table 5 — Test methods for extractable heavy metals**

| Extractable heavy metal | Method standard |

| :--- | :--- |

| Antimony (Sb), Arsenic (As), Lead (Pb), Cadmium (Cd), Chromium (Cr), Cobalt (Co), Copper (Cu), Nickel (Ni) | Method 1: GB/T 17593.1-2006<br>Method 2: GB/T 17593.2-2007<br>Method 3ª: GB/T 3922 and ISO 17294-2:2016 |

| Mercury (Hg), Arsenic (As) | Method 1: GB/T 17593.4-2006<br>Method 2ª: GB/T 3922 and ISO 17294-2:2016 |

| Chromium (VI) (Cr⁶⁺) | GB/T 17593.3-2006 |

| ª For test methods using GB/T 3922 and ISO 17294-2:2016, use the acid perspiration solution specified in GB/T 3922. Weigh 4 g of specimen cut into pieces smaller than 5 mm × 5 mm (duplicate for parallel testing), accurate to 0.01 g. Place into a stoppered conical flask, add 80 mL of acid perspiration solution, thoroughly wet the fibers, shake in a constant temperature water bath shaker at (37 ± 2) °C for 60 minutes. Remove, cool to room temperature, filter, and analyze according to ISO 17294-2:2016. |

**6.2.2 Nickel release**

The nickel release of finished products shall be tested according to GB/T 30158.

**6.2.3 Flame retardant agents**

Brominated flame retardants shall be tested according to GB/T 24279.1. Phosphorus‑based flame retardants shall be tested according to GB/T 24279.2.

**6.2.4 Allergenic dyes**

Allergenic dyes shall be tested according to GB/T 20383.

**6.2.5 Carcinogenic dyes**

Carcinogenic dyes shall be tested according to GB/T 20382.

**6.2.6 Nonylphenol (NP) and nonylphenol ethoxylates (NPEO)**

Nonylphenol (NP) and nonylphenol ethoxylates (NPEO) shall be tested according to GB/T 23322.

**6.2.7 Short‑chain chlorinated paraffins (SCCP)**

Short‑chain chlorinated paraffins shall be tested according to GB/T 40263.

**6.2.8 Permethrin**

Permethrin shall be tested according to GB/T 18412.4-2006, using gas chromatography with mass selective detection (GC‑MSD).

**6.2.9 Perfluorooctane sulfonic acid (PFOS) and its salts, and perfluorooctane sulfonyl fluoride (PFOSF)**

PFOS and its salts and PFOSF shall be tested according to EN 17681-1:2022.

*Note: The content of perfluorooctane sulfonyl fluoride in textiles is expressed as perfluorooctane sulfonic acid. The results of perfluorooctane sulfonyl fluoride are calculated as perfluorooctane sulfonic acid.*

**6.2.10 Perfluorooctanoic acid (PFOA) and its salts**

PFOA and its salts shall be tested according to GB/T 31126.

*Note: The content of perfluorooctanoate salts in textiles is expressed as perfluorooctanoic acid. The results of perfluorooctanoate salts are calculated as perfluorooctanoic acid.*

**6.2.11 Chlorinated toluenes**

Chlorinated toluenes shall be tested according to GB/T 20384.

**6.2.12 Polycyclic aromatic hydrocarbons (PAH)**

Polycyclic aromatic hydrocarbons (PAH) shall be tested according to GB/T 28189.

**6.2.13 Solvent residues**

Solvent residues shall be tested according to GB/T 35446.

**6.2.14 Vinyl chloride monomer (VCM)**

Vinyl chloride monomer (VCM) shall be tested according to GB/T 4615.