ISO 16900-4:2011 PDF

Name: ISO 16900-4:2011 — Respiratory protective devices — Methods of test and test equipment — Part 4: Determination of gas filter capacity and migration, desorption and carbon monoxide dynamic testing
SKU: ISO 16900-4:2011
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Respiratory protective devices — Methods of test and test equipment — Part 4: Determination of gas filter capacity and migration, desorption and carbon monoxide dynamic testing

Название (английский):

ISO 16900-4:2011

Respiratory protective devices — Methods of test and test equipment — Part 4: Determination of gas filter capacity and migration, desorption and carbon monoxide dynamic testing

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 16
Дата публикации:: 18 августа 2011 г.
Издание:: ISO IS 16900 edition 1 version 1
ICS:: 13.340.30

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Описание (английский):

ISO 16900-4:2011 specifies the test method for determining gas capacity of separate or integral gas and combined filters for respiratory protective systems. ISO 16900-4:2011 includes the validation test at specified flow rates, a desorption test to access the ability of the filter to retain the adsorbed or absorbed gas, and carbon monoxide dynamic testing.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 16900-4:2011 defines laboratory test methods and test equipment for determining the gas filter capacity of separate, integral and combined filters used in respiratory protective devices (RPD). The standard covers sorption (gas capacity) testing, gas filter validation at specified flow rates, migration and desorption assessments, and carbon monoxide (CO) dynamic testing. It is a supplement to RPD performance standards and specifies how to measure breakthrough times, retained mass/volume of test agents and effluent CO over time.

Key topics and technical requirements

Scope and purpose: Test methods for gas and combined filters to quantify capacity, retention and dynamic CO behaviour under defined lab conditions. Note: results reflect controlled test conditions and do not directly predict field performance.

Principles:

Sorption (gas capacity) and validation tests measure breakthrough time at defined concentrations, flow rates, temperature and humidity.
Migration tests (A & B) assess release of adsorbed/absorbed gas after storage by passing clean air (A) or test gas (B) through the filter.
Desorption test measures immediate release when clean air is passed through the filter after exposure.
CO dynamic testing records effluent CO concentration and integral dose under cyclic/dynamic breathing conditions.

Apparatus:

Constant-flow system: challenge gas generator, test chamber, detector (sensitivity sufficient to resolve 10% of breakthrough concentration).
Dynamic-flow system: breathing machine, humidifier, flow meters, head form/adapter and CO analyzers.

Methods and conditions:

Preconditioning (e.g., store specimens in commercial packaging for minimum 4 h at 21 ± 3 °C).
Ambient test range typically 16–32 °C, (50 ± 30) % RH; tolerances ±5% unless otherwise specified.
Gas capacity calculation (from standard): C = V × c × t × 10^−6 (example given in standard yielding C = 0.9 L).

Reporting and uncertainty: Test report clauses, measurement uncertainty guidance and annexes for alternative methods.

Applications and practical value

Use cases:

Manufacturers: design verification, product development and quality control of gas/combined filters.
Test laboratories / certification bodies: type testing and certification to performance standards.
Occupational safety professionals & regulators: evaluating filter claims, specifying RPD for workplace hazards.
R&D teams: comparative performance studies and material selection.

Practical benefits: standardized, repeatable assessment of filter breakthrough, retention and desorption behavior; guidance on apparatus and data reporting for regulatory compliance.

ISO 16900-4:2011 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and practical value

Related standards (brief)

Технические детали

BS ISO 16900-2:2017

Respiratory protective devices. Methods of test and test equipment. Determination of breathing resistance.

BS EN ISO 16972:2020

Respiratory protective devices. Vocabulary and graphical symbols.

ISO/TS 21748:2004

Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty esti…