BS ISO 22262-2:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Determination of analytical requirements
6 Range
7 Limit of quantification
8 Principle
9 Safety precautions
10 Apparatus
11 Reagents
12 Sample size and homogeneity
13 Methods for gravimetric matrix reduction
14 Procedures for quantification of asbestos in the
   final residue from gravimetric
   matrix reduction
15 Determination of asbestiform amphibole in
   vermiculite
16 Determination of asbestos in talc
17 Determination of compliance with legislative
   control limits
18 Test report
Annex A (normative) - Types of commercial
        asbestos-containing materials and optimum
        analytical procedures
Annex B (normative) - Required centrifuge times for
        separation of amphibole in heavy liquid
Annex C (normative) - Example of test report
Bibliography

Defines 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 ISO22262 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 ISO22262 is applicable to the quantitative analysis of: any material for which the estimate of asbestos mass fraction obtained using ISO22262-1 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; resilient floor tiles, asphaltic materials, roofing felts and any other materials in which asbestos is embedded in an organic matrix; wall and ceiling plasters, with or without aggregate; mineral products such as wollastonite, dolomite, calcite, talc or vermiculite, and commercial products containing these minerals. This part of ISO22262 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 ISO22262 to provide instruction in the fundamental microscopical and analytical techniques.