Standard
UPDATE AVAILABLE
AS 4964-2004
[Superseded]Method for the qualitative identification of asbestos in bulk samples
Specifies a method for the qualitative identification of asbestos in bulk samples using a number of steps, depending on the sample appearance and composition. Polarized light microscopy is described as the primary detection technique.
Published: 24/03/2004
Pages: 20
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Objective
3 Referenced documents
4 Definitions
5 Reagents
5.1 Refractive index (RI) fluids
5.2 Dissolution agents
6 Apparatus
6.1 Agate mortar and pestle
6.2 Furnace
6.3 Polarized light microscope (PLM) and dispersion staining (DS)
6.4 Sample handling tools
6.5 Stereo-microscope
6.6 Test sieve
7 Sampling
8 Procedure for bulk sample identification
8.1 General examination
8.2 Classification
8.2.1 Homogeneous samples
8.2.2 Non-homogeneous samples (excluding soils and ores)
8.2.3 Soil samples
8.2.4 Ore samples
8.3 Slide preparation examination and identification
8.3.1 General
8.3.2 Sample disintegration techniques
8.3.3 Analytical criteria
8.4 Trace analysis criteria
8.5 Laboratory documentation
9 Test report
9.1 General
9.2 Homogeneous samples - asbestos evident (i.e. no trace analysis required)
9.3 Homogenous samples - no asbestos evident (trace analysis required)
9.4 Non-homogenous samples - asbestos evident (i.e. trace analysis required)
9.5 Non-homogenous samples - no asbestos evident (i.e trace analysis required)
Appendix A
A1 Scope
A2 General analytical considerations
A3 Different powers of discrimination between fibres and their non-fibrous polymorphs
A4 Different detection limits
A5 Combination of techniques
A6 Regulatory requirements
Appendix B
B1 Scope
B2 Postive confirmation of refractive indices
B3 Comments on UK MDHS 77 asbestos identification method
Appendix C
C1 Scope
C2 Building materials
C3 Soil and ores
Appendix D
Appendix E
Cited references in this standard
[Withdrawn]
Guide to the sampling of particulate materials, Part 1: Sampling procedures
BS EN 932-1
Tests for general properties of aggregates, Part 1: Methods for sampling
BS 1377-1
Methods of test for soils for civil engineering purposes. Part 1: General requirements and sample preparation
[Withdrawn]
Guide to the investigation and sampling of sites with potentially contaminated soil, Part 1: Non-volatile and semi-volatile compounds
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