ISO 24095:2021 PDF

Scope: This document gives guidelines for the measurements of respirable crystalline silica in air using direct on-filter or indirect X-ray diffraction and infrared analysis methods, including quality aspects of the measurements. The scope of this document includes the following crystalline silica polymorphs: quartz and cristobalite. These guidelines are intended for use in conjunction with the following specific analytical methods under the jurisdiction of ISO TC 146 SC 2: ISO 16258-1, ISO 16258-2, and ISO 19087. When used with any of these documents, this guidance will help to ensure measurement procedures meet the uncertainty requirements stipulated in ISO 20581, to enable the results to be compared to occupational exposure limit values (OELV) in accordance with EN 689[40]. These guidelines are also relevant to the analysis of filters obtained from dustiness measurements in accordance with EN 15051[1] and EN 17289[35].

ISO 24095:2021 Referenced Document

EN 13205 Workplace Atmospheres - Assessment of Performance of Instruments for Measurement of Airborne Particle Concentrations*， 2024-04-20 Update
ISO 13137 Workplace atmospheres — Pumps for personal sampling of chemical and biological agents — Requirements and test methods*， 2022-08-31 Update
ISO 18158 Workplace air — Terminology
ISO 7708 Air quality - Particle size fraction definitions for health-related sampling
ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories [Standard in French]

2021 ISO 24095:2021 Workplace air - Guidance for the measurement of respirable crystalline silica
2009 ISO 24095:2009 Workplace air - Guidance for the measurement of respirable crystalline silica