BSI PD ISO/TS 5973:2024

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Laser diffraction measurements. Good practice

Published By	Publication Date	Number of Pages
BSI	2024	32

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PDF Catalog

PDF Pages	PDF Title
2	undefined
7	Foreword
8	Introduction
9	1 Scope 2 Normative references 3 Terms and definitions
12	4 Symbols 5 Laser diffraction experiment and measurement
13	6 Information recommended collecting prior to analysis 6.1 Sample information
14	6.2 Desired outcome of analysis
15	6.3 Other sample considerations
16	6.4 Best sampling practice prior to laser diffraction measurements 6.4.1 General 6.4.2 Sampling of powders
17	6.4.3 Sampling of emulsions and suspensions 6.4.4 Sampling of sprays, gas bubbles and aerosols
18	6.4.5 Improving sampling in the instrument 7 Samples not appropriate for analysis by laser diffraction
19	8 Additional guidance on optical properties of samples 8.1 Coloured samples 8.2 Porous samples 8.3 Mixtures 8.4 Mie, Fraunhofer and incorrect use of refractive index
20	9 Repeatability, intermediate precision and reproducibility 9.1 General 9.2 Key measurands 9.3 Instrument repeatability
21	9.4 Method repeatability (under repeatability conditions)
22	9.5 Intermediate precision and reproducibility (under intermediate precision/ reproducibility conditions)
23	9.6 Summary table of experiments detailed in 9.3 through 9.5 9.7 When is tighter or wider control needed? 9.8 What are the most appropriate control parameters? 10 Interpretation of light scattering and assessment of data quality 10.1 Background stability and alignment quality
24	10.2 Multiple scattering 10.3 Non-smooth scattering patterns 11 Interpretation of trends in measurement data 11.1 General 11.2 Dispersion (wet measurements)
25	11.3 Dissolution (wet measurements) 11.4 Agglomeration (wet measurements) 11.5 Size decreasing on successive measurements (dry measurements) 11.6 Random variation (wet measurements) 11.7 Other causes of poor repeatability (wet and dry measurements)
26	12 Orthogonal techniques for laser diffraction 12.1 Image analysis 12.2 Dynamic light scattering
27	13 Validation, installation qualification, operational qualification and performance qualification
28	Annex A (informative) Characterization data approach to laser diffraction measurements
31	Bibliography