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GB 28881-2023: Hand protection - Protective gloves against chemicals and micro-organisms 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 28881: Historical versions
Similar standardsGB 28881-2023: Hand protection - Protective gloves against chemicals and micro-organisms---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/GB28881-2023GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 13.340.40 CCS C 73 Replacing GB 28881-2012 Hand protection -- Protective gloves against chemicals and micro-organisms Issued on. DECEMBER 28, 2023 Implemented on. JANUARY 01, 2025 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 5 4 Technical requirements... 6 5 Test methods... 9 6 Marks... 10 7 Information provided by manufacturer... 11 Annex A (normative) Test method for penetration resistance... 14 Bibliography... 19ForewordThis document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents". This document replaces GB 28881-2012 "Hand protection - Protective gloves against chemicals and micro-organisms". Compared with GB 28881-2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows. - Changed the scope (see Chapter 1 of this Edition; Chapter 1 of Edition 2012); - Changed some terms and definitions (see Chapter 3 of this Edition; Chapter 3 of Edition 2012); - Deleted the general provisions (see 4.1 of Edition 2012); - Added the technical requirements and classification of protective gloves against chemicals (see 4.1 of this Edition); - Added the general protection requirements that should comply with the provisions of GB 42298-2022 (see 4.1.2, 4.2.2 of this Edition); - Changed the technical requirements for permeation resistance performance (see 4.1.4 of this Edition; 4.3.2 of Edition 2012); - Added nitric acid, acetic acid, ammonium hydroxide, hydrogen peroxide, hydrofluoric acid, formaldehyde and other permeation resistance performance test chemicals (see Table 1 of this Edition); - Changed the technical requirements for mechanical properties (see 4.1.5, 4.2.4 of this Edition; 4.4 of Edition 2012); - Changed the table of wear resistance, cut resistance, tear resistance and puncture resistance in mechanical properties (see Table 3 of this Edition; see Table 3, Table 4, Table 5, Table 6 of Edition 2012); - Deleted the ergonomic requirements (see 4.2 of Edition 2012); - Added the technical requirements for protective gloves against micro-organisms (see 4.2 of this Edition); - Deleted the test methods for hand and glove size and dexterity (see 5.1 and 5.2 of Edition 2012); - Added the test methods for general protection requirements (see 5.1 of this Edition); - Added additional sampling requirements in the permeation resistance performance test method (see 5.3 and Figure 1 of this Edition); - Changed the test methods for mechanical properties (see 5.4 of this Edition; 5.5, 5.6, 5.7, 5.8 of Edition 2012); - Changed the requirements for marking (see Chapter 6 of this Edition; 6.1 of Edition 2012); - Changed the information provided by the manufacturer (see Chapter 7 of this Edition; 6.2 of Edition 2012); - Partially changed the description of the air tightness test device and the liquid tightness test device (see A.3 of this Edition; A.4 of Edition 2012); - Partially changed the description of the air tightness test method and the liquid tightness test method (see A.4 of this Edition; A.5 of Edition 2012). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights. This document was proposed by and shall be under the jurisdiction of Ministry of Emergency Management of the People's Republic of China. Versions of standard substituted by this document are. - It was first published in 2012 as GB 28881-2012; - This is the first revision. Hand protection -- Protective gloves against chemicals and micro-organisms1 ScopeThis document defines terms and definitions for protective gloves against chemicals and micro-organisms, specifies technical requirements, labeling and information to be provided by the manufacturer, and describes test methods. This document applies to gloves for protective gloves against chemical and micro- organism hazards.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 23462-2009, Protective clothing -- Test method for chemical protective materials to permeation by chemicals GB 24541-2022, Hand protection -- Protective gloves against mechanical risks GB 42298-2022, Hand protection -- General technical specifications3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply. 3.1 protective gloves against chemicals Gloves that protect the wearer's hands from chemicals. 3.2 protective gloves against micro-organisms Protective gloves that can form an effective barrier against all types of microorganisms, excluding viruses, thereby preventing their penetration. 3.3 degradation Contact with chemicals may cause destructive changes in one or more of the properties of protective gloves. NOTE. Including peeling, expansion, fragmentation, embrittlement, fading, deformation, hardening and softening. 3.4 penetration The process by which chemicals and/or microorganisms penetrate protective gloves at a non-molecular level through defects such as pores, seams, pinholes, etc. in the protective glove material. 3.5 permeation The process by which chemical molecules are adsorbed by the protective glove material, diffuse within the material, and precipitate from the other side of the material. 3.6 test chemicals Chemicals or chemical mixtures used to determine the permeation properties of protective glove materials under laboratory conditions. 3.7 normalized breakthrough time The time from the start of the test until the chemical permeation rate (permeation amount) reaches the standard permeation rate (permeation amount).4 Technical requirements4.1 Protective gloves against chemicals 4.1.1 General Protective gloves against chemicals should meet the technical requirements of general protection requirements (4.1.2), penetration resistance (4.1.3), permeation resistance (4.1.4) and mechanical properties (4.1.5). Protective gloves against chemicals are divided into Type A, Type B and Type C according to the number of test chemicals and the level of permeation resistance performance of each test chemical. 4.1.2 General protection requirements Protective gloves against chemicals should comply with the requirements of Chapter 5 of GB 42298-2022 according to the grade and applicability of the product. 4.1.3 Penetration resistance performance When the protective gloves against chemicals are tested according to the method specified in 5.2, no leakage should occur. 4.1.4 Permeation resistance performance 4.1.4.1 Type A protective gloves against chemicals Type A protective gloves against chemicals should be tested with the 6 test chemicals listed in Table 1 based on the information provided by the manufacturer. The test should be carried out according to the method specified in 5.3.The permeation resistance performance level of each test chemical should not be less than Level 2 in Table 2. 4.1.4.2 Type B protective gloves against chemicals Type B protective gloves against chemicals should be tested with the 3 test chemicals listed in Table 1 based on the information provided by the manufacturer. The test should be carried out according to the method specified in 5.3.The permeation resistance performance level of each test chemical should not be less than Level 2 in Table 2. 4.1.4.3 Type C protective gloves against chemicals Type C protective gloves against chemicals shall be tested with 1 of the test chemicals listed in Table 1 based on the information provided by the manufacturer. The test shall be carried out in accordance with the method specified in 5.3.The permeation resistance level of each test chemical shall not be less than Level 1 in Table 2. 4.1.5 Mechanical properties Protective gloves against chemicals are tested according to the method specified in 5.4 based on the mechanical property level of the product. At least one of the abrasion resistance, cut resistance (disc knife test method), tear resistance and puncture resistance should reach level 1 listed in Table 3. 4.2 Protective gloves against micro-organisms 4.2.1 General Protective gloves against micro-organisms should meet the general protection requirements (4.2.2), penetration resistance (4.2.3) and mechanical properties (4.2.4) requirements. 4.2.2 General protection requirements Protective gloves against micro-organisms should comply with the requirements of Chapter 5 of GB 42298-2022 according to the level and applicability of the product. 4.2.3 Penetration resistance performance When the microbial protective gloves are tested according to the method specified in 5.2, no leakage should occur.5 Test methods5.1 General protection requirements The test shall be carried out according to the method specified in Chapter 5 of GB42298-2022 based on the grade and applicability of the product. 5.2 Penetration resistance performance Perform the test as specified in Annex A. 5.3 Permeation resistance performance Cut 3 specimens from the palm of the glove. If the glove length is greater than or equal to 400 mm and the cuff material is claimed to have chemical protection performance, an additional 3 specimens should be cut 80 mm from the end of the cuff (see Figure 1). If there is a seam in the hand area, at least 1 specimen should include the seam. If the chemical protection glove material adopts a multi-layer structure and there are other material layers on the chemical protection layer, remove other material layers as much as possible, such as the thermal insulation layer, without destroying the chemical protection layer.6 Marks6.1 Protective gloves against chemicals 6.1.1 The marks of protective gloves against chemicals shall comply with the requirements of 6.1 of GB 42298-2022. 6.1.2 The mark of protective gloves against chemicals should include a mechanical property icon, which should be marked on the glove body. The mechanical property icon should comply with the requirements of 7.2 in GB 24541-2022. 6.1.3 The protective gloves against chemicals shall be marked with the classification icons of protective gloves against chemicals (see Table 4) and marked on the gloves. The test chemicals for penetration resistance performance shall be marked below the corresponding icons and indicated by the numbers in Table 1. 6.2 Protective gloves against micro-organisms 6.2.1 The marks of microbial protective gloves shall comply with the requirements of 6.1 of GB 42298-2022. 6.2.2 The mark of microbial protective gloves should include a mechanical property icon,7 Information provided by manufacturer7.1 Protective gloves against chemicals The information of protective gloves against chemicals should comply with the requirements of 6.2 of GB 42298-2022 and should include the following. 7.2 Protective gloves against micro-organisms The information of microbial protective gloves should comply with the requirements of 6.2 of GB 42298-2022 and should include the following. - Mechanical property level; - Application scope and limitations of protective gloves; - Methods for selecting protective gloves of appropriate size; - Inspection method before using protective gloves; - Wearing method of protective gloves and/or precautions for matching with other protective equipment; - If applicable, maintenance method of protective gloves. In addition to the above information, the manufacturer should also provide the following warnings. - The test results do not reflect the actual protection period in the workplace. - The penetration resistance is only tested under laboratory conditions and only relates to the test specimen. - It is recommended to check whether the gloves are suitable for the intended use. The conditions in the workplace may differ from the type test due to objective factors such as temperature changes, the occurrence of wear and degradation of the glove material.Annex A(normative) Test method for penetration resistance A.1 Principle A.1.1 Principle overview The penetration resistance performance test methods include air tightness test and liquid tightness test. Among them, the air tightness test method is the preferred method. However, during the inflation process of the air tightness test of some protective gloves, some parts are extremely inflated while other parts are not fully inflated or even cannot take in air. Therefore, it is not suitable to use air tightness test, and only liquid tightness test can be used. A.1.2 Air tightness test Immerse the gloves filled with a certain pressure of air in water. If a series of bubbles appear on the surface of the gloves, it means that the gloves are leaking. A.1.3 Liquid tightness test Fill the glove with water. If water seeps out of the glove surface, it means the glove is leaking. A.2 Sampling Take 1 glove of each size and at least 4 gloves for each test. A.3 Test device A.3.1 Air tightness test device The schematic diagram of the air tightness test device is shown in Figure A.1, which mainly includes the following parts. a) Fixing device. the upper part of the frustum is connected to the air pressure regulating device; the lower part can rotate 180° around the axis; it can keep the test gloves airtight; its enlarged schematic diagram is shown in Figure A.2; b) Air pump. can provide a pressure of 0 kPa~10 kPa; c) Water tank. the size should meet the test requirements; d) Pressure gauge. the measurement range is 0 kPa~10 kPa; the measurement accuracy is 0.1 kPa; e) Air pressure regulating device. A.4 Test method A.4.1 Sample preparation Remove the test gloves. Record the name, model, batch number, size and brand information of the gloves. Visually inspect the gloves. If the gloves have rips, tears or holes, report the gloves as unacceptable. A.4.2 Air tightness test Fix the gloves on the fixture and immerse them in water at room temperature. Inflate the gloves according to Table A.1 and keep it for 2 min [the inflation pressure fluctuation in the gloves shall not exceed ±10%. When observing the possible bubbles, the test time may be extended for a certain period of time, but it shall not exceed (30±5) s]. For every 100 mm increase in the distance between the glove fingertips and the water surface, the pressure shall be increased by 1 kPa. For example, if the glove fingertips are immersed in water at a depth of 250 mm, the inflation pressure in the gloves shall be increased by 2.5 kPa on the basis of Table B.1. A.5 Result recording The result record should include the following. a) Complete identification information of the tested gloves; b) Visual inspection results; c) Test conditions; d) Air tightness test or liquid tightness test results; e) Explanation of no test. ......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 28881-2023 be delivered?Answer: The full copy PDF of English version of GB 28881-2023 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 28881-2023_English with my colleagues?Answer: Yes. 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