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BS EN ISO 21363:2022

BS EN ISO 21363:2022

$215.11

Nanotechnologies. Measurements of particle size and shape distributions by transmission electron microscopy

Published By Publication Date Number of Pages
BSI 2022 94
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PDF Catalog

PDF Pages PDF Title
2 undefined
5 European foreword
Endorsement notice
9 Foreword
10 Introduction
11 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Core terms — Particles
14 3.2 Core terms — Image capture and analysis
15 3.3 Core terms — Statistical symbols and definitions
17 3.4 Core terms — Measurands
20 3.5 Core terms — Metrology
23 3.6 Core terms — Transmission electron microscopy
24 3.7 Statistical symbols, measurands and descriptors
3.7.1 Statistical symbols
3.7.2 Measurands and descriptors
25 4 Stakeholder needs for TEM measurement procedures
26 5 Sample preparation
5.1 General
27 5.2 Sample sources
5.3 Use a representative sample
5.3.1 General
5.3.2 Powder samples
5.3.3 Nanoparticle dispersions in liquids
28 5.4 Minimize particle agglomeration in the sample dispersion
5.5 Selection of the mounting support
6 Instrument factors
6.1 Instrument set-up
29 6.2 Calibration
6.2.1 General
6.2.2 Calibration standards
6.2.3 General calibration procedure
31 6.3 Setting TEM operating conditions for calibration
32 7 Image capture
7.1 General
7.2 Setting a suitable operating magnification
33 7.3 Minimum particle area
7.4 Number of particles to count for particle size and shape distributions
34 7.5 Uniform background
7.6 Measurement procedure
7.6.1 General
35 7.6.2 Developing a test sample
7.6.3 Effects of magnification
7.6.4 Frames (micrographs)
7.7 Revision of image capture protocols
8 Particle analysis
8.1 General
8.2 Individual particle analysis
36 8.3 Automated particle analysis
8.4 Example — Automated particle analysis procedure
37 9 Data analysis
9.1 General
9.2 Raw data triage — Detecting touching particles, unselected particles, artefacts and contaminants
38 9.3 Data quality assessment — Repeatability, intermediate precision and reproducibility
40 9.4 Fitting distributions to data
41 9.5 ​Assessing measurement uncertainty for samples under repeatability, intermediate precision or reproducibility conditions
9.5.1 Grand statistics for fitted parameters — Three or more datasets
9.5.2 Measurement uncertainty of fitted parameters
42 9.5.3 Example — Measurement uncertainty for a size descriptor
9.6 Bivariate analysis
43 10 Reporting
46 Annex A (informative) Case studies overview
48 Annex B (informative) Discrete spheroidal nanoparticles
51 Annex C (informative) Size mixture
63 Annex D (informative) Shape mixture
68 Annex E (informative) Amorphous aggregates
72 Annex F (informative) Nanocrystalline aggregates
76 Annex G (informative) Nanofibres with irregular cross-sections
83 Annex H (informative) Nanoparticles with specific crystal habits
90 Bibliography

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BS EN ISO 21363:2022
$215.11