BS ISO 13794:1999
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Ambient air. Determination of asbestos fibres. Indirect-transfer transmission electron microscopy method
Hardcopy , PDF
23-09-2023
English
15-11-1999
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1 Scope
1.1 Substance determined
1.2 Type of sample
1.3 Range
1.4 Limit of detection
2 Terms and definitions
3 Abbreviated terms
4 Principle
5 Apparatus
5.1 Air sampling
5.2 Specimen preparation laboratory
5.3 Equipment for analysis
5.4 Consumable supplies
6 Reagents
7 Air sample collection
7.1 Calculation of analytical sensitivity
7.2 Sample collection procedure
8 Procedure for analysis
8.1 General
8.2 Cleaning of sample cassettes
8.3 Preparation of analytical filters
8.4 Preparation of TEM specimens from PC analytical filters
8.5 Preparation of TEM specimens from cellulose ester
analytical filters
8.6 Criteria for acceptable TEM specimen grids
8.7 Procedure for structure counting by TEM
8.8 Blank and quality control determinations
8.9 Calculation of results
9 Performance characteristics
9.1 General
9.2 Interferences and limitations of fibre identification
9.3 Precision and accuracy
9.4 Limit of detection
10 Test report
Annex A (normative) Determination of operating conditions for
plasma asher
Annex B (normative) Determination and standardization of operating
conditions for ultrasonic bath
Annex C (normative) Calibration procedures
Annex D (normative) Structure-counting criteria
Annex E (normative) Fibre identification procedure
Annex F (normative) Determination of concentrations of asbestos fibres
and bundles longer than 5um, and of PCM-equivalent
asbestos fibres
Annex G (normative) Calculation of results
Annex H (normative) Test procedure to determine suitability of cellulose
ester sample collection filters
Annex I (informative) Strategies for collection of air samples
Bibliograph
Defines a reference method using transmission electron microscopy (TEM) to determine the concentration of asbestos structures in ambient atmospheres. The method determines the type(s) of asbestos fibre present.
| Committee |
EH/2/3
|
| DevelopmentNote |
Supersedes 95/521516 DC (08/2004)
|
| DocumentType |
Standard
|
| Pages |
74
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 13794:1999 | Identical |
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