This document specifies a reference method using transmission electron microscopy for the determination 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 structures in any atmosphere. The specimen preparation procedure incorporates ashing and dispersion of the collected particulate, so that all asbestos is measured, including the asbestos originally incorporated in particle aggregates or particles of composite materials. The lengths, widths and aspect ratios of the asbestos fibres and bundles are measured, and these, together with the density of the type of asbestos, also allow the total mass concentration of airborne asbestos to be calculated. The method allows determination of the type(s) of asbestos fibres present. The method cannot discriminate between individual fibres of the asbestos and elongate fragments (cleavage fragments and acicular particles) from non-asbestos analogues of the same amphibole mineral
[12].
Cross References:ISO 4225
ISO 22309
ISO 16000-7
ISO 15932
ISO 10312
ISO 25498
ISO 29301
ISO 22029
ISO 8672
All current amendments available at time of purchase are included with the purchase of this document. | File Size : | 1
file
, 6.5 MB |
| ISBN(s) : | 9780539002737 |
| Note : | This product is unavailable in Russia, Ukraine, Belarus |
| Number of Pages : | 90 |
| Product Code(s) : | 30374687, 30374687, 30374687 |
| Published : | 10/09/2019 |
| Same As : | BS ISO 13794:2019 |
