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ISO 22262-2 1st Edition, September 1, 2014 Air quality - Bulk materials - Part 2: Quantitative determination of asbestos by gravimetric and microscopical methods
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 22262 specifies procedures for quantification
of asbestos mass fractions below approximately 5 %, and
quantitative determination of asbestos in vermiculite, other
industrial minerals and commercial products that incorporate these
minerals.
This part of ISO 22262 is applicable to the quantitative
analysis of:
a) any material for which the estimate of asbestos mass fraction
obtained using ISO 22262-1 is deemed to be of insufficient
precision to reliably classify the regulatory status of the
material, or for which it is considered necessary to obtain further
evidence to demonstrate the absence of asbestos;
b) resilient floor tiles, asphaltic materials, roofing felts and
any other materials in which asbestos is embedded in an organic
matrix;
c) wall and ceiling plasters, with or without aggregate;
d) mineral products such as wollastonite, dolomite, calcite,
talc or vermiculite, and commercial products containing these
minerals.
This part of ISO 22262 is primarily intended for application to
samples in which asbestos has been identified at estimated mass
fractions lower than approximately 5 % by weight. It is also
applicable to samples that may contain asbestos at low mass
fractions incorporated into matrix material such that microscopical
examination of the untreated sample is either not possible or
unreliable. An annex gives recommendations for the analysis of each
type of material that may contain asbestos.
It is not the intent of ISO 22262 to provide instruction in the
fundamental microscopical and analytical techniques.