GB 2890-2022Respiratory protection - Non-powered air-purifying gas mask (English PDF)

1 Scope

GB 2890-2022 is the Chinese national standard on respiratory protection - non-powered air-purifying respirators, in the field of environment and health protection, safety. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 29 December 2022 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 January 2024. Classification: ICS 13.340.30, CCS C73. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This 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 references

The 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

3 Terms and definitions

The 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 marking

4.1 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.

6 Test methods

6.1 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.