GB2890-2022

Respiratory protection—Non-powered air-purifying respirators

呼吸防护自吸过滤式防毒面具

GB 2890-2022 é uma norma nacional chinesa obrigatória vigente: Respiratory protection—Non-powered air-purifying respirators. Setor: Médico. Foco: Segurança de produtos. Entrada em vigor: 1 de jan. de 2024.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

GB 2890-2022 applies to non-powered air-purifying gas masks that rely on the wearer's breathing to draw air through filters. It covers full masks, half masks, and various filter types used for protecting against toxic gases, vapors, and particulate matter. This standard is mandatory for all manufacturers producing respiratory protective equipment for the Chinese market. It is explicitly not applicable to respiratory protective equipment designed for oxygen-deficient environments, underwater operations, escape scenarios, or firefighting hot zones.

Requisitos técnicos

The standard specifies comprehensive physical, chemical, and performance requirements for both the facepiece and the filters. For facepieces, it mandates general design criteria ensuring materials are non-toxic and non-irritating, alongside strict requirements for high and low-temperature adaptability and flame retardancy. Manufacturers must ensure facepieces exhibit minimal inward leakage and acceptable breathing resistance under specified flow rates. For filters, the standard classifies them into various types (e.g., Type A for organic gases, Type B for inorganic gases, Type K for ammonia) and levels based on protective time. Combined filters must also meet specific particulate protection performance criteria (KN/KP series). The standard dictates strict limits on airflow resistance, airtightness, and the minimum duration the filter can effectively protect the user against specific test agents. Additionally, the standard outlines requirements for practical performance, ensuring the equipment can be worn comfortably without causing intolerable issues or mission failure during simulated use. Compliance also requires specific markings, color-coding on filters, and detailed user information provided by the manufacturer.

Métodos de ensaio

GB 2890-2022 details rigorous testing protocols, often referencing GB 2626-2019 for specific procedures. Key tests include the inward leakage test using human subjects performing specific movements in a test chamber, and the breathing resistance test measuring pressure drops at various flow rates. The standard also outlines methods for testing filter protective time against specific toxic agents, mechanical strength of head straps and filter-to-mask connections, and field of vision measurements using specialized perimetry equipment. All test samples must undergo mandatory temperature and mechanical pre-treatments before testing.

Perguntas frequentes

What products are regulated under GB 2890-2022?

GB 2890-2022 applies to non-powered air-purifying gas masks, including full masks and half masks with various gas, vapor, and combined filters. It does not apply to respiratory equipment designed for oxygen-deficient environments, underwater operations, escape, or firefighting hot zones.

Are there any significant updates from the previous GB 2890-2009 version?

The 2022 revision introduces several major changes, including updated definitions for combined filters, modified leakage rate and breathing resistance requirements, the addition of overall airtightness testing for full masks, and the inclusion of practical performance testing. It also restructures the testing methods into normative annexes.

How does GB 2890-2022 differ from international respiratory standards?

GB 2890-2022 aligns conceptually with international standards such as ISO 17420-2 and EN 14387, but it maintains specific Chinese classification systems for filter types (e.g., A, B, E, K, CO, Hg, H2S) and performance levels. Manufacturers must ensure their product markings and testing protocols specifically meet the GB standard requirements for the Chinese market.

The summary above provides a high-level overview of GB 2890-2022. To ensure complete compliance for your respiratory protection products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 2890-2022 today to access all detailed parameters, classification tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: C73
ICS: 13.340.30
Órgão competente: Ministry of Emergency Management
Comitê técnico: National Technical Committee on Personal Protective Equipment of Standardization Administration of China

Relações

Substitui:GB 2890-2009