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GB/T 21551.2-2024: Antimicrobial and cleaning function of household and similar electrical appliances - Part 2: Particular requirements for material Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 21551.2: Historical versions
Similar standardsGB/T 21551.2-2024: Antimicrobial and cleaning function of household and similar electrical appliances - Part 2: Particular requirements for material---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT21551.2-2024 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 97.030 CCS Y 60 Replacing GB 21551.2-2010 Antimicrobial and Cleaning Function of Household and Similar Electrical Appliances - Part 2.Particular Requirements for Material Issued on: DECEMBER 31, 2024 Implemented on: JANUARY 1, 2027 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 Introduction... 6 1 Scope... 8 2 Normative References... 8 3 Terms and Definitions... 9 4 Technical Requirements... 9 5 Test Methods... 10 6 Inspection Rules... 11 7 Marking and Usage Annotations... 13 Appendix A (normative) Test Method for the Antimicrobial Performance of Materials ... 14 Appendix B (normative) Test Method for the Antimicrobial Performance of Components and Parts... 24 Appendix C (normative) Test Method for the Preventing Mildew Performance of Materials... 27 Appendix D (normative) Test Method for the Preventing Mildew Performance of Components and Parts... 33 Appendix E (normative) Test Method for the Antiallergenic Performance... 36 Appendix F (normative) Test Method for the Antiviral Performance... 40 Appendix G (informative) Catalogue of Antimicrobial, Preventing Mildew, Antiallergenic, Antiviral Materials and Components and Parts of Household and Similar Electrical Appliances... 46 Bibliography... 48ForewordThis document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents. This is Part 2 of GB/T 21551 Antimicrobial and Cleaning Function of Household and Similar Electrical Appliances. GB/T 21551 has issued the following parts. ---Part 1.General requirement; ---Part 2.Particular requirements for material; ---Part 3.Particular requirements for air cleaner; ---Part 4.Particular requirements for refrigerator; ---Part 5.Particular requirements for electric washing machine; ---Part 6.Particular requirements for air conditioner. This document serves as a replacement for GB 21551.2-2010 Antibacterial and Cleaning Function for Household and Similar Electrical Appliances - Particular Requirements of Material. In comparison with GB 21551.2-2010, apart from structural adjustments and editorial modifications, the main technical changes are as follows. ---The scope of application is modified (see Chapter 1; Chapter 1 of Version 2010); ---The term and definition of “components and parts” are added (see 3.1); ---The requirements for hygiene and safety, antiallergenic performance, antiviral performance and attenuation are added (see 4.1, 4.4, 4.5 and 4.6); ---The unified requirements for the pre-treatment of test water and test samples, hygiene and safety test methods, antiallergen test method, antivirus test method and attenuation test method are added (see 5.1, 5.2, 5.5, 5.6, 5.7); ---Inspection rules, marking and usage annotations are added (see Chapter 6 and Chapter 7); ---The test method for the antimicrobial performance of materials is modified, the absorption method and film application method test are integrated, and the oscillation method is added (see Appendix A; Appendix A and Appendix B of Version 2010); ---The eluent is modified from normal saline into SCDLP, and the control sample is modified from ordinary polypropylene non-woven fabric to cotton woven fabric (see A.5.1.3 and A.5.2.2.2; A.5.4 and B.1.2 of Version 2010); ---The calculation formula of “antimicrobial logarithmic value” is added (see A.6.2); ---The “test method for the antimicrobial performance of components and parts” is added (see Appendix B); ---The bacterial strain name is modified. “Aspergillus niger” is modified into “Aspergillus brasiliensis”, the species number is modified into CGMCC 3.5487, which is equivalent to ATCC 16404, the species number of “Aspergillus terreus” is modified into CGMCC 3.7156, “Penicillium funicolosum” is modified into “Talaromyces funiculosus”, and the species number AS is modified into CGMCC (see Appendix C.3.1.1; C.4.1 of Version 2010); ---The “test method for the preventing mildew performance of components and parts” is added (see Appendix D); ---The “test method for the antiallergenic performance” is added (see Appendix E); ---The “test method for the antiviral performance” is added (see Appendix F). This document was proposed by China National Light Industry Council. This document shall be under the jurisdiction of National Technical Committee 46 on Household Electrical Appliances of Standardization Administration of China (SAC/TC 46). The drafting organizations of this document. China Household Electric Appliance Research Institute (CHEARI); Foshan Shunde District Freudenberg Apollo Enviromental Protection Equipment Co., Ltd.; Shangpin Health Technology (Guangdong) Co., Ltd.; Guangdong Midea Refrigeration Equipment Co., Ltd.; Hangzhou Goldfish Group Co., Ltd.; Zhuhai Gree Electric Appliances Co., Ltd.; Infinitus (China) Co., Ltd.; Qingdao Haier Refrigerator Co., Ltd.; Panasonic Home Appliances (China) Co., Ltd.; Hefei Kinghome Electrical Co., Ltd.; TOTO (Shanghai) Co., Ltd.; AUPU Intelligent Technology Co., Ltd.; Qingdao V&H Intelligent Technology Co., Ltd.; Shanghai KOHLER Electronic Technology Co., Ltd.; BSH Home Appliances (Jiangsu) Co., Ltd.; Beijing Yadu Environmental Protection Technology Co., Ltd.; Jiangsu Xingxing Cold Chain Technology Co., Ltd.; CHEARI (Beijing) Certification & Testing Co., Ltd.; Guangdong Academy of Sciences (Guangdong Detection Center of Microbiology); Zhongke Testing Technology Services (Guangzhou) Co., Ltd.; CVC Testing Technology Co., Ltd.; Guangzhou Institute of Microbiology Group Co., Ltd.; Anhui CQC-CHEARI Technology Co., Ltd. The main drafters of this document. Ma Dejun, Lu Jianguo, Zhu Jixing, Huang Hai, Zhang Qingling, Li Huanxin, Wang Zhigang, Zhang Hua, Wang Tongshuai, Chen Guoshuai, Wang Ning, Jia Chungeng, Qian Meishuang, Xia Yelian, Cao Lixia, Li Changzheng, Wang Haitao, Liu Yuhua, Jiang Feng, Yu Jian, Li Yi, Xie Xiaobao, Zhong Yu, Xu Yanjun, Ding Nianping, Wu Bing. The issuing of the previous versions. ---First issued in 2010 as GB 21551.2-2010; ---This is the first revision.IntroductionGB/T 21551 Antimicrobial and Cleaning Function of Household and Similar Electrical Appliances is divided into several parts, consisting of general requirements and special requirements. Part 1 is the general requirements, and the other parts are special requirements. For household and similar electrical appliances covered by the special requirements, the requirements shall be in accordance with the relevant provisions of the special requirements. GB/T 21551 is intended to consist of the following parts. ---Part 1.General requirement. The purpose is to specify the general requirements and test methods for the antimicrobial, microbial reduction and cleaning functions of household and similar electrical appliances. ---Part 2.Particular requirements for material. The purpose is to specify the basic performance parameters and test methods for antimicrobial, preventing mildew, antiallergen and antivirus of materials and components used by household and similar electrical appliances. ---Part 3.Particular requirements for air cleaner. The purpose is to specify the basic performance parameters and test methods for antimicrobia, preventing mildew, antiallergen, antivirus, microbial reduction, allergen reduction, virus reduction and deodorization of air cleaners for household and similar purposes. ---Part 4.Particular requirements for refrigerator. The purpose is to specify the basic performance parameters and test methods for antimicrobia, preventing mildew, microbial reduction, cleaning / deodorization of refrigerators for household and similar purposes. ---Part 5.Particular requirements for electric washing machine. The purpose is to specify the basic performance parameters and test methods for antimicrobia, preventing mildew, microbial reduction, dust mite reduction, allergen reduction, virus reduction and deodorization of electric washing machines for household and similar purposes. ---Part 6.Particular requirements for air conditioner. The purpose is to specify the basic performance parameters and test methods for antimicrobia, preventing mildew, microbial reduction, indoor air cleaning and self-cleaning of air conditioners for household and similar purposes. ---Part 7.Particular requirements for electrical toilet seat. The purpose is to specify the basic performance parameters and test methods for antimicrobia, preventing mildew, microbial reduction and deodorization of electrical toilet seats for household and similar purposes. ---Part 8.Particular requirements for electric storage water heater. The purpose is to specify the basic performance parameters and test methods for antimicrobia, preventing mildew and microbial reduction of electric storage water heaters for household and similar purposes. Antimicrobial and Cleaning Function of Household and Similar Electrical Appliances - Part 2.Particular Requirements for Material1 ScopeThis document specifies the technical requirements for the antimicrobial, preventing mildew, antiallergenic and antiviral performance of materials and components and parts used by household and similar electrical appliances (hereinafter referred to as “household appliances”), and describes the corresponding test methods. This document is applicable to the effectiveness evaluation of the antimicrobial, preventing mildew, antiallergenic and antiviral performance of household appliances that use antimicrobial, preventing mildew, antiallergenic and antiviral materials and related components and parts.2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 2829 Sampling Procedures and Tables for Periodic Inspection by Attributes (apply to inspection of process stability) GB/T 4288-2018 Household and Similar Electrical Washing Machine GB 4789.2 National Food Safety Standard - Microbiological Examination of Food. Aerobic Plate Count GB/T 4789.15 National Food Safety Standard - Food Microbiological Examination. Enumeration of Molds and Yeasts GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgement of Limiting Values GB/T 17219 Standard for Safety Evaluation of Equipment and Protective Materials in Drinking Water System GB 19489 Laboratories - General Requirements for Biosafety GB/T 21551.1 Antimicrobial and Cleaning Function of Household and Similar Electrical Appliances - Part 1.General Requirement3 Terms and DefinitionsThe terms and definitions defined in GB/T 21551.1, and the following are applicable to this document. 3.1 components and parts The individual workpieces or units that constitute an appliance.4 Technical Requirements4.1 Hygiene and Safety The antimicrobial, preventing mildew, antiallergenic and antiviral materials that come into contact with drinking water shall comply with the requirements of GB/T 17219. 4.2 Antimicrobial Performance The antimicrobial rate of the materials, and components and parts shall not be less than 90.0% (the antimicrobial logarithmic value shall not be less than 1.0). 4.3 Preventing Mildew Performance The preventing mildew level of the materials, and components and parts shall be Level 1 or Level 0. 4.4 Antiallergenic Performance The antiallergenic rate of the materials shall not be less than 90.0%. 4.5 Antiviral Performance The antiviral rate of the materials shall not be less than 90.0% (the antiviral logarithmic value shall not be less than 1.0). 4.6 Attenuation 4.6.1 After the attenuation test in 5.7, the antimicrobial rate of the materials and components and parts shall not be less than 90.0% (the antimicrobial logarithmic value shall not be less than 1.0).5 Test Methods5.1 Test Conditions 5.1.1 Test water Unless otherwise specified, the water used is Grade 3 or above specified in GB/T 6682. 5.1.2 Pre-treatment of test samples The mode of test sample pre-treatment depends on the materials. The following sterilization modes can be selected to achieve the aseptic condition of the materials as the initial state. After sterilization, the antimicrobial performance shall not be affected, or the test result shall not be interfered with, and the pre-treatment method used shall be indicated in the report. New samples shall be used for testing and previously tested samples shall not be repeatedly used. 5.2 Hygiene and Safety The materials in contact with drinking water shall be tested in accordance with the method specified in GB/T 17219. 5.3 Antimicrobia 5.3.1 The antimicrobial performance of the materials shall be tested in accordance with the method specified in Appendix A. 5.3.2 The antimicrobial performance of the components and parts shall be tested in accordance with the method specified in Appendix B. 5.4 Preventing Mildew 5.4.1 The preventing mildew performance of the materials shall be tested in accordance with the method specified in Appendix C. 5.4.2 The preventing mildew performance of the components and parts shall be tested in accordance with the method specified in Appendix D. 5.5 Antiallergen The antiallergenic performance shall be tested in accordance with the method specified in Appendix E. 5.6 Antivirus The antiviral performance shall be tested in accordance with the method specified in Appendix F. 5.7 Attenuation Test 6.1 Type inspection shall be carried out in one of the following situations. a) Trial production, finalization and appraisal of new products; b) After formal production, when the product design, process or materials undergo significant changes that may affect the performance of the product; c) When production is resumed after a suspension of more than half a year; d) When exit-factory inspection results are significantly different from the previous type inspection results; e) During normal production, it shall be carried out at least once a year; f) When the national quality supervision institution proposes a request for type inspection.7 Marking and Usage Annotations7.1 The materials, components, and parts that meet the requirements of this document may be marked as “antimicrobia”, “preventing mildew”, “antiallergen” and “antivirus”, etc. in the products used or in the instructions for use. 7.2 Products marked as “antimicrobia”, “preventing mildew”, “antiallergen” and “antivirus” shall list the names of specific materials and components and parts.Appendix A(normative) Test Method for the Antimicrobial Performance of Materials A.1 Test Principle The bacterial solution is quantitatively inoculated on the samples to be tested and the control samples, and through film application or other applicable methods, the bacteria are evenly contacted with the samples. After a certain period of culture, determine the number of residual live bacteria in the two groups of samples, and calculate the antimicrobial rate and antimicrobial logarithmic value of the samples. A.2 Test Environment and Operation Requirements The test shall adopt aseptic operation techniques. The laboratory environment, test operation and other parts involving biosafety shall comply with the requirements of GB 19489. A.3 Bacterial Species, Culture Medium, Instruments and Equipment A.3.1 Bacterial species A.4 Preservation and Activation of Bacterial Species A.4.1 Preservation of bacterial species Inoculate the standard bacterial strain on a NA slant, at (37 1) C, culture for 24 h, and then, preserve it at 5 C ~ 10 C (shall not exceed 1 month) as slant-preserved species. A.4.2 Activation of bacterial species Transfer the slant-preserved species to a NA plate, and (37 1) C, culture for (24 1) h, transferring once a day. During the test, fresh bacterial cultures of the 3rd ~ 5th generations transferred within 24 hours shall be used. A.5 Test Methods A.5.1 Film application method A.5.1.1 Overview This method is used to test the antimicrobial performance of non-absorbent materials that can be made into a certain area. A.5.1.2 Test material requirements A.5.1.2.1 Test samples The sample to be tested can be made of antimicrobial components or homogeneous materials using the same process, with a size of (50 2) mm (50 2) mm, or the area to be tested must be no less than 1,600 mm2. The sample to be tested may also be directly cut from household appliances and their components and parts. If the sample cannot be obtained or prepared into the specified size, it shall be ensured that the sample surface area is covered by a covering film that complies with the requirements of A.5.1.2.3. NOTE. if due to the shape limitations of the product, it is difficult to directly collect the test sample, the test sample may be made using the same raw materials and processing methods as the product. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 21551.2-2024 be delivered?Answer: The full copy PDF of English version of GB/T 21551.2-2024 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 21551.2-2024_English with my colleagues?Answer: Yes. 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