Ambient air — Determination of asbestos fibres — Direct transfer transmission electron microscopy method (ISO 10312:2019)
This document specifies a reference method using transmission electron microscopy for thedetermination of airborne asbestos fibres and structures in in a wide range of ambient air situations,including the interior atmospheres of buildings, and for a detailed evaluation for asbestos structuresin any atmosphere. The method allows determination of the type(s) of asbestos fibres present and alsoincludes measurement of the lengths, widths and aspect ratios of the asbestos structures. The methodcannot discriminate between individual fibres of asbestos and elongate fragments (cleavage fragmentsand acicular particles) from non-asbestos analogues of the same amphibole mineral[13].
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