BS ISO 14966:2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Ambient air. Determination of numerical concentration of inorganic fibrous particles. Scanning electron microscopy method
Hardcopy , PDF
17-12-2019
English
31-08-2007
Foreword
Introduction
1 Scope
2 Terms and definitions
3 Abbreviated terms
4 Principle
5 Apparatus and materials
5.1 Air sampling
5.2 Preparation of filters
5.3 Sample analysis
6 Air sample collection and analysis
6.1 Measurement planning
6.2 Collection of air samples
6.3 SEM specimen preparation
6.4 Analysis in the scanning electron microscope
7 Calculation of results
7.1 Calculation of the mean fibre concentration
7.2 Calculation of the 95% confidence interval
8 Performance characteristics
8.1 General
8.2 Measurement uncertainty
8.3 Limit of detection
9 Test report
Annex A (normative) Preparation of filters for air sampling
Annex B (normative) Procedures for calibration and
adjustment of the SEM
Annex C (informative) Characteristics and chemical
composition of inorganic fibres
Annex D (informative) Poisson variability as a function of
fibre density on sampling filter and area of
filter analysed
Annex E (informative) Combination of the results
from multiple samples
Bibliography
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