GB 46310-2025 Protective clothing—Protective clothing against particles English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 13.340.10 CCS C73
People's Republic of China National Standard
GB 46310-2025
Protective clothing — Protective clothing against particles
Issued on August 29, 2025
Implemented on September 1, 2026
Issued by
State Administration for Market Regulation
Standardization Administration of China
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and codes
5 Technical requirements
6 Test methods
7 Marking and manufacturer's information
Appendix A (Normative) Practical performance test method for protective clothing
Appendix B (Normative) Test method for inward leakage rate of particle protective clothing
Appendix C (Normative) Test method for flame resistance of fabrics (single-nozzle dynamic method)
References
Protective clothing — Protective clothing against particles
1 Scope
This document specifies the classification, codes, technical requirements, marking, and manufacturer's information for protective clothing against particles, and describes test methods.
This document is applicable to protective clothing designed to reduce hazards from harmful particles to wearers.
This document does not apply to protective clothing against volatile or permeable toxic gases/liquids, nor to radiation protection and diagnostic/therapeutic medical procedures.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies; for undated references, the latest edition (including any amendments) applies.
GB/T 3917.3 Textiles — Determination of tearing force of fabrics — Part 3: Tearing force of trapezoid-shaped specimens
GB/T 3923.1 Textiles — Tensile properties of fabrics — Part 1: Determination of breaking force and elongation at break (Strip method)
GB/T 4744 Textiles — Evaluation for water resistance — Hydrostatic pressure test
GB/T 4745-2012 Textiles — Evaluation for water resistance — Water repellency test
GB/T 11048 Textiles — Physiological comfort — Determination of thermal resistance and water vapor resistance under steady-state conditions (Sweating guarded-hotplate method)
GB 12014-2019 Protective clothing — Electrostatic protective clothing
GB/T 12586-2003 Rubber or plastic coated fabrics — Determination of resistance to flexing damage
GB/T 12704.1 Textiles — Test methods for water vapor transmission of fabrics — Part 1: Hygroscopic method
GB/T 12903 Terms for personal protective equipment
GB/T 13773.2 Textiles — Seam properties of fabrics and fabrics assemblies — Part 2: Grab method for seam strength determination
GB/T 20654 Protective clothing — Mechanical properties — Test methods for puncture resistance and dynamic tear resistance
GB/T 21196.2 Textiles — Determination of abrasion resistance of fabrics using the Martindale method — Part 2: Determination of specimen rupture
GB/T 21294-2024 Test methods for physical and chemical properties of garments
GB 24539 Protective clothing — Chemical protective clothing
ISO 16603:2004 Protective clothing materials against blood and body fluids — Determination of resistance of protective clothing materials to penetration by blood and body fluids — Test method using synthetic blood
3 Terms and definitions
Terms and definitions as defined in GB/T 12903 and the following apply to this document.
3.1 Particle
Solid, liquid, or solid-liquid mixed particulate matter suspended in air.
Note: Including dust, smoke, mist, and microorganisms.
3.2 Synthetic blood
A mixture of amaranth dye, surfactant, thickener, inorganic salts, and distilled water with surface tension and viscosity similar to blood and some other body fluids.
Note: The synthetic blood in this document does not simulate all characteristics of real blood or body fluids, such as color, coagulation, and cytoplasmic content.
[Source: ISO 16603:2004, 3.7, modified]
3.3 Inward leakage rate
The ratio of simulated agent concentration leaking into the protective clothing from various parts, including joints, to the simulated agent concentration in the test environment under specified test conditions.
Note 1: Ljmn,82/90: Inward leakage rate expressed as a percentage. 82/90 refers to the 82nd inward leakage rate when all 90 leakage rate scores are arranged in ascending order, including all test movements and sampling points.
Note 2: LS,8/10: Total inward leakage rate per garment. 8/10 refers to the 8th value when all 10 garments' total inward leakage rates are arranged in ascending order.
3.4 Water-vapor resistance
The ratio of the water vapor pressure difference between two surfaces of a material to the heat flux per unit area generated in the gradient direction.
Note 1: Water-vapor resistance determines the "potential" heat flux that could be caused by a stable water vapor pressure gradient across a given area, where the heat flux may consist of diffusion and convection components.
Note 2: Unit: kPa·m²/W.
[Source: ISO 11092:2014, 2.2, modified]
3.5 Protective clothing against particles for industrial use
Full-body protective clothing that protects against harmful airborne particles in workplaces, preventing skin exposure or contact.
3.6 Protective clothing against biological particles
Full-body protective clothing that protects against harmful biological airborne particles in workplaces, preventing skin exposure or contact.
3.7 Protective clothing against radioactive contaminated particles
Full-body protective clothing that protects against airborne radioactive contaminated particles, preventing skin exposure or contact.
Note: Does not include positive-pressure protective clothing with internal ventilation and clean air supply.
3.8 Protective clothing against particles for emergency response
Full-body protective clothing worn by personnel during emergency rescue and response to protect against harmful particles, preventing skin exposure or contact.
4 Classification and codes
Particle protective clothing is classified into four categories based on protective function and usage scenarios:
— Industrial particle protective clothing, category code: K-1;
— Biological particle protective clothing, category code: K-2;
— Emergency response particle protective clothing, category code: K-3;
— Radioactive contaminated particle protective clothing, category code: K-4.
5 Technical requirements
5.1 Design requirements
Particle protective clothing design shall include:
a) The protective clothing shall be a coverall;
b) The protective clothing shall cover at least the wearer's torso, head, arms, and legs. The coverage range is illustrated in Figure 1.
Figure 1 Schematic diagram of protective clothing coverage range
5.2 Performance requirements
5.2.1 General requirements
All finished particle protective clothing and fabrics shall be evaluated against the items listed in Table 1.
Table 1 Test evaluation items for finished clothing and fabrics
5.2.2 Practical performance
All categories of particle protective clothing shall be tested according to the method specified in 6.1 for practical performance and shall not restrict the subject from completing any specified movements.
5.2.3 Electrostatic properties
If manufacturers declare electrostatic protective properties, all categories of particle protective clothing shall be tested according to Appendix B of GB 12014-2019 without washing. The electric charge quantity shall not exceed 0.60 μC/set.
5.2.4 Overall protection performance
5.2.4.1 Industrial, biological, and emergency response particle protective clothing shall be tested according to 6.2:
Inward leakage rate Ljmn,82/90 ≤ 30%;
Total inward leakage rate LS,8/10 ≤ 15% per garment.
