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GB 2890-2022: Respiratory protection - Non-powered air-purifying gas mask 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 2890: Historical versions
GB 2890-2022: Respiratory protection - Non-powered air-purifying gas mask---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/GB2890-2022GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 13.340.30 CCS C 73 Replacing GB 2890-2009 Respiratory protection - Non-powered air-purifying gas mask Issued on. DECEMBER 29, 2022 Implemented on. JANUARY 01, 2024 Issued by. State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 Classification and marking... 9 5 Technical requirements... 10 6 Test methods... 17 7 Marking, packaging, information provided by the manufacturer... 19 Appendix A (Informative) Summary of testing requirements... 22 Appendix B (Normative) Pretreatment method... 24 Appendix C (Normative) Main dimensions of test headform... 26 Appendix D (Normative) Test method of mask... 27 Appendix E (Normative) Filter test method... 39 Appendix F (Normative) Practical performance test method... 55 References... 561 ScopeThis document specifies the classification and sign, technical requirements, marking, packaging and information provided by the manufacturer of non-powered air-purifying gas masks; describes the test methods. This document applies to gas masks based on the non-powered air-purifying principle. This document does not apply to non-powered air-purifying gas masks, which are used in hypoxic environments, underwater operations, escape and firefighting hot zones.2 Normative referencesThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, for dated reference documents, only the version corresponding to the date applies to this document; for undated reference documents, the latest version (including all amendments) applies to this document. GB/T 2428-1998 Head-face dimensions of adults GB 2626-2019 Respiratory protection - Non-powered air-purifying particle respirator GB/T 5703-2010 Basic human body measurements for technological design GB/T 10586-2006 Specifications for damp heat chambers GB/T 10589-2008 Specifications for low temperature test chambers GB/T 11158-2008 Specifications for high temperature test chambers GB/T 12903-2008 Personal protective equipment terminology GB/T 23465-2009 Respiratory protective equipment - Practical performance evaluation methods GB 30864-2014 Respiratory protection - Powered air-purifying respirator GB/T 32166.2-2015 Personal protective equipment - Eye and face protection - Occupational eye and face protectors - Part 2.Test methods3 Terms and definitionsThe terms and definitions as defined in GB/T 12903-2008, as well as the following terms and definitions, apply to this document. 3.1 Non-powered air-purifying gas mask The air-purifying protection device, where the wearer relies on the spontaneous breathing to overcome the resistance of the components and protect against toxic and harmful gases or vapors, particulate matter (such as toxic smoke, toxic mist) that harms the respiratory system or eyes and face. 3.2 Full mask A mask that fits tightly on the face and can cover the eyes, face, nose, mouth, chin. 3.3 Half mask A mask that fits tightly on the face and can cover the mouth and nose, or cover the mouth, nose, chin. 3.4 Protective time Under specified conditions, the time FROM when the test medium begins to pass through the filter TO when the concentration of the test medium passing through the filter reaches the limit value. 3.5 Gas filter Cartridge Canister A filter component, which is used in a non-powered air-purifying gas mask, that can filter out toxic gases and/or vapors in the inhaled air. 3.6 Combined filters A filter component, that can simultaneously filter out toxic gases and/or vapors and particulate matter in the inhaled air. Note. The combined filter whose anti-particulate components can be replaced is a combined type; the combined filter whose anti-particulate components cannot be replaced is an integral type.4 Classification and marking4.1 Non-powered air-purifying gas mask Non-powered air-purifying gas masks can be divided into catheter-type gas masks and direct-type gas masks, according to the connection method between the mask and the gas filter. 4.2 Mask Masks are divided into full masks and half masks, according to their structure. 4.3 Filters 4.3.1 Filter type 4.3.1.1 Ordinary filters Ordinary filters include. 4.3.1.2 Multifunctional filter Filters which are used to protect two or more types in the ordinary gas filters (4.3.1.1). 4.3.1.3 Combined filter Filters with the function of preventing particulate matter are divided into two categories. KN and KP, according to the different properties of protecting particulate matter. The category KN is only suitable for filtering non-oily particles; the category KP is suitable for filtering oily and non-oily particles. 4.3.2 Filter level 4.3.2.1 Filter protective time Filters are divided into level 1, level 2, level 3 according to the different protective time and from low to high. 4.3.3 Marking The marking of the gas filter consists of the gas filter protection gas type, gas filter protective time level, particle protection performance level (when applicable). The particle protection performance level is marked on the anti-particulate matter component; the protective gas type and filter level are marked on the anti-toxic gas and/or vapor component, on the combined filter.5 Technical requirements5.1 Mask 5.1.1 General requirements for masks The structure and design of the mask shall meet the following requirements, be inspected according to the method specified in 6.2, evaluated in 6.23. 5.1.2 Mask adaptability to high and low temperatures When tested according to the method specified in 6.3, the mask shall have no obvious deformation; the connecting part shall be able to be connected to the gas filter (breathing hose), according to the method provided by the manufacturer. 5.1.3 Mask flammability When tested according to the method specified in 6.4, each component exposed to the flame shall not burn after being removed from the flame; if burning, the afterburning time shall not exceed 5 s. 5.1.4 Mask exhalation valve 5.1.4.1 Mask exhalation valve protection device When tested according to the method specified in 6.5, the exhalation valve protection device shall not slip, break or deform, when it withstands an axial tension of 50 N for 10 seconds. 5.1.5 Inward leakage 5.1.6 Mask dead space Test according to the method specified in 6.8.The test result shall not be greater than 1%. 5.1.7 Mask field of view Test according to the method specified in 6.9.The test results shall meet the requirements of Table 1. 5.1.8 Mask breathing resistance Test according to the method specified in 6.10.The test results shall meet the requirements of Table 2. 5.1.9 Mask viewing window Only full-face masks are tested. The observation windows of full-face masks shall meet the following requirements. 5.1.11 Mask headband Test according to the method in 6.14.The test results shall comply with the following requirements. 5.1.12 Overall air tightness of full mask When tested according to the method in 6.15, the pressure change within each full mask within 60 seconds shall not be greater than 100 Pa. 5.1.13 Breathing hose When tested according to the method of 6.16, the length of the breathing hose shall be 50 cm ~ 100 cm; when tested according to the method of 6.17, the pressure value inside the breathing hose shall not change within 15 seconds. 5.2 Filters 5.2.1 General requirements for gas filters The structure and design of the gas filter shall meet the following requirements, be inspected according to the method in 6.2, evaluated in 6.23. 5.2.4 Density of gas filters The density of the gas filter shall meet the following requirements. 5.2.5 Particle protection performance of combined filter Test according to the method specified in 6.21.The test results shall meet the requirements of Table 5. 5.2.6 Filter color marking Check according to the method specified in 6.2.The color marking of the gas filter shall meet the following requirements. 5.2.7 Filter protective time Test according to the method of 6.22.The protective time of various types of gas filters shall comply with the provisions of Table 6, Table 7, Table 8.6 Test methods6.1 Test samples and test conditions The test sample shall conform to the description of the product label and be functionally valid. The total number of test samples shall be determined, according to the specific requirements of the test. See Appendix A for the number of individual test samples and pretreatment requirements. 6.2 Appearance inspection Before laboratory performance testing, non-powered air-purifying gas masks shall be visually inspected, including inspection of their appearance, structure, information and markings provided by the manufacturer. 6.3 Mask adaptability to high and low temperatures It is carried out, according to the provisions of B.1. 6.4 Mask flammability It is carried out in accordance with the provisions of 6.15 in GB 2626-2019. 6.5 Mask exhalation valve protection device It is carried out in accordance with the provisions of 6.8 in GB 2626-2019. 6.6 Air tightness of mask exhalation valve It is carried out in accordance with the provisions of D.1 of Appendix D. 6.7 Inward leakage It is carried out in accordance with the provisions of D.2. 6.8 Mask dead space It is carried out in accordance with the provisions of D.3. 6.9 Mask field of view It is carried out in accordance with the provisions of D.4. 6.10 Mask breathing resistance It is carried out in accordance with the provisions of D.5. 6.11 Light transmittance of mask observation window It is carried out in accordance with the provisions of 5.3 in GB/T 32166.2-2015. 6.12 Impact performance of mask observation window It is carried out in accordance with the provisions of 6.1.2 in GB/T 32166.2-2015. 6.19 Ventilation resistance of gas filter It is carried out in accordance with the provisions of E.2. 6.20 Density of gas filters It is carried out in accordance with the provisions of E.3. 6.21 Particulate protection performance of combined filter It is carried out in accordance with the provisions of 6.3 in GB 2626-2019; the loading amount is 120 mg. 6.22 Filter protective time It is carried out in accordance with the provisions of E.4. 6.23 Practical performance It is carried out in accordance with the provisions of Appendix F.7 Marking, packaging, information provided by themanufacturer 7.1 Marking 7.1.1 Mask The following shall be clearly marked on each mask. 7.1.2 Gas filter The following content shall be clearly marked on each gas filter. 7.2 Packaging 7.2.1 Sales packaging shall be able to protect the product from mechanical damage and contamination before use. 7.2.2 On the minimum sales package, it shall clearly and permanently mark in Chinese, at least the following information; OR these can be visible through transparent packaging. 7.3 Information provided by the manufacturer Each non-powered air-purifying gas mask (mask or gas filter) shall have an additional product description on the smallest package it is sold in, which can be provided to the end user in printed matter, albums, etc., which shall include but not be limited to the following. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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