Overview
ISO 19918:2017/Amd 1:2021 is an important amendment to the international standard focused on protective clothing and chemical protection. This standard specifically targets the measurement of cumulative permeation of chemicals with low vapor pressure through protective materials. The 2021 amendment enhances the standard by updating procedures related to extraction and chemical analysis of permeated substances, thereby improving the accuracy and reliability of permeation measurement.
Developed by ISO Technical Committee ISO/TC 94 and Subcommittee SC 13, this amendment addresses key methodologies needed for assessing protection against hazardous chemicals in various safety applications. It ensures harmonized, validated testing methods suitable for industries where chemical exposure risk is present.
Key Topics
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Cumulative Permeation Measurement
The standard provides procedures for measuring how chemicals with low vapor pressure gradually permeate through protective clothing materials over time. This cumulative permeation data is crucial to evaluate the long-term protective effectiveness of fabrics.
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Extraction Procedure Update
Amendment 1 adds and specifies acceptable extraction procedures for isolating test substances from collector discs used in permeation tests. These procedures ensure that the evaluation of chemical permeation is accurate and consistent.
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Chemical Analysis Sensitivity
The limit of quantification (LOQ) for detecting chemicals has been refined from 0.1 µg/cm² to a more sensitive 0.05 µg/mL, allowing for better detection of low concentration permeation.
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Standardized Testing Methods
The document promotes reproducible and standardized test protocols critical for manufacturers and safety experts in validating the chemical resistance of protective materials.
Applications
ISO 19918:2017/Amd 1:2021 is valuable for organizations and sectors focused on personal protective equipment (PPE) and chemical hygiene, including:
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Protective Clothing Manufacturers
Utilizing the updated testing methods to design and validate fabrics that provide effective barriers against hazardous chemicals with low vapor pressure.
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Occupational Health and Safety
Employers and safety auditors use this standard to assess PPE compliance, ensuring workers in chemical industries are adequately protected from chemical exposure risks.
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Chemical Processing and Laboratories
Assurance of protective garments used in environments involving corrosive or toxic substances with low vapor pressure.
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Regulatory Bodies and Certification Agencies
Evaluating and certifying protective clothing according to internationally recognized permeation measurement criteria.
Related Standards
- ISO 6530 – Protection against chemicals - Determination of resistance of protective clothing materials to penetration by liquids.
- ISO 16602 – Protective clothing for protection against chemicals - Performance requirements.
- ISO/IEC Directives, Part 1 & 2 – Guidelines for development and maintenance of ISO standards.
- CEN/TC 162 – European standards for protective clothing, hand and arm protection related to chemical barriers.
By complying with ISO 19918:2017/Amd 1:2021, stakeholders can enhance safety, improve product quality, and meet international best practices in chemical permeation testing for protective clothing. This standard supports the critical objective of safeguarding workers from chemical hazards through reliable PPE evaluation techniques.
Open preview (PDF)Protective clothing — Protection against chemicals — Measurement of cumulative permeation of chemicals with low vapour pressure through materials — Amendment 1: Extraction and chemical analysis