ISO 22262-1-2012 PDF

Full title and description

Air quality — Bulk materials — Part 1: Sampling and qualitative determination of asbestos in commercial bulk materials. This International Standard specifies methods for sampling commercial bulk materials and for the qualitative identification of asbestos using polarized light microscopy and dispersion staining, with optional use of electron microscopy and procedures for separating asbestos fibres from common matrix materials such as asphalt, cement and plastics.

Abstract

This part of ISO 22262 provides: (a) procedures for representative sampling of bulk/commercial materials suspected of containing asbestos; (b) sample preparation and simple separation techniques to liberate asbestos fibres from matrices; (c) a detailed qualitative identification procedure based on polarized light microscopy (PLM) and dispersion staining; and (d) guidance on optionally using scanning or transmission electron microscopy with energy-dispersive X-ray analysis for problematic samples. The document also addresses common analytical interferences and fibre types encountered during analysis.

General information

• Status: Published.
• Publication date: 2012-07 (July 2012).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.040.20 (Ambient atmospheres / Air quality).
• Edition / version: Edition 1, 2012.
• Number of pages: 70 (ISO listing). Note: some national catalogues list slightly different page counts (≈70–83 pages) depending on national publication format.

Scope

ISO 22262-1:2012 applies to qualitative identification of asbestos in specified manufactured products and commercial minerals where fibres can be readily separated from the matrix. It covers representative sampling of bulk materials, sample preparation, fibre separation methods for common matrices (e.g., asphaltic products, cement, plastics), and identification by polarized light microscopy with dispersion staining. For difficult or ambiguous samples, identification may be carried out using scanning electron microscopy (SEM) or transmission electron microscopy (TEM) with energy-dispersive X-ray analysis. The standard is intended for use by analysts experienced in microscopical techniques.

Key topics and requirements

• Representative sampling procedures for commercial bulk materials (to obtain material suitable for qualitative asbestos analysis).
• Sample preparation and simple mechanical/chemical separation techniques to release asbestos fibres from matrices such as asphalt, cement and plastics.
• Qualitative identification protocol using polarized light microscopy (PLM) and dispersion staining, including documentation of optical properties and identification criteria.
• Guidance on use of SEM/TEM with EDX for confirmation or for samples unsuitable for PLM.
• Discussion of common analytical interferences, confusing non‑asbestos fibres and recommended approaches to resolve ambiguous results.

Typical use and users

Primary users are analytical and environmental laboratories, microscopists, asbestos surveyors, remediation consultants, product conformity assessors and regulatory bodies that need to determine the presence or absence of asbestos in commercial bulk materials (e.g., insulation, fireproofing, roofing, floor coverings, vermiculite products). The standard is used where a qualitative identification of asbestos fibres is sufficient to inform classification, regulatory action or further quantitative testing.

Related standards

ISO 22262 is a multipart series on bulk-material asbestos analysis. Part 2 addresses quantitative determination of asbestos by gravimetric and microscopical methods (previously ISO 22262-2:2014; revised and republished as ISO 22262-2 in 2026). Laboratories often use Part 1 (qualitative) together with Part 2 (quantitative) where mass-fraction estimates are required or when results from Part 1 are inconclusive. Other related standards cover air monitoring, sampling protocols and electron-microscopy methods used for asbestos analysis.

Keywords

asbestos, bulk materials, sampling, polarized light microscopy, PLM, dispersion staining, SEM, TEM, energy-dispersive X-ray, fibre separation, qualitative identification, air quality, ISO 22262.

FAQ

Q: What is this standard?

A: ISO 22262-1:2012 is an international standard that specifies methods for sampling commercial bulk materials and the qualitative identification of asbestos fibres, primarily using polarized light microscopy and dispersion staining.

Q: What does it cover?

A: It covers representative sampling, sample preparation, simple separation techniques to free asbestos fibres from common matrices (asphalt, cement, plastics), the PLM/dispersion-staining identification procedure, and optional confirmation using SEM/TEM with EDX; it also discusses analytical interferences and common non‑asbestos fibres.

Q: Who typically uses it?

A: Environmental and materials testing laboratories, microscopists, asbestos surveyors and consultants, regulatory agencies, and any organization needing qualitative confirmation of asbestos in commercial bulk products.

Q: Is it current or superseded?

A: As of the latest ISO catalogue listing, ISO 22262-1:2012 remains the published Part 1 document (published July 2012). It has not been superseded; however, related parts of the ISO 22262 series (for example Part 2) have been revised in later years. Users should check the ISO catalogue or their national standards body for any amendments or reviews.

Q: Is it part of a series?

A: Yes — ISO 22262 is a multipart standard addressing asbestos analysis in bulk materials. Part 1 is the qualitative sampling and identification method; Part 2 covers quantitative determination (and has been revised separately). Other related standards address sampling and analysis of airborne fibres and specific laboratory techniques.

Q: What are the key keywords?

A: asbestos, bulk sampling, qualitative identification, PLM, dispersion staining, SEM, TEM, energy-dispersive X-ray, fibre separation, air quality.