BS 3406-1:1986
Current
The latest, up-to-date edition.
Methods for determination of particle size distribution Guide to powder sampling
Hardcopy , PDF
English
31-10-1986
Foreword
Committees responsible
Guide
Section one. General
0. Introduction
1. Scope
2. Definitions
Section two. Collection of gross and laboratory samples
3. Guidelines
4. Sampling strategy
Section three. Selection of a sampling method for
subdivision of the laboratory sample
5. General
6. Homogeneity
7. Flow characteristics
8. Preliminary examination and precautions
9. Quantity of material to be sampled
10. Sampling efficiency
Section four. Methods for subdivision of the laboratory
sample
11. Scoop sampling
12. Coning and quartering
13. Chute riffling
14. Rotary sampling
Section five. Methods for the preparation of very small
test portions
15. General
16. Suspension sampling
17. Paste sampling
18. Sampling for microscopic analysis
Appendices
A. Comparative sampling efficiencies
B. Relationship between minimum sample mass and mass
fraction of coarsest size
C. Bibliography
Tables
1. Relative efficiencies of sampling methods for free
flowing powders
2. Powder sampling methods: variation of subsample
masses
3. Relative efficiencies of powder sampling methods:
subsample composition
4. Relative efficiencies of powder sampling methods:
subsample mass
5. Comparison of sampling methods to obtain small
test portions
Figures
1. Sampling strategies
2. Coning and quartering process
3. Chute riffler
4. Whole stream sampling
5. Whole stream rotary sample divider type 1
6. Whole stream rotary sample divider type 2
7. Divided stream sampling
8. Divided stream rotary sample divider
9. Suspension sampler
10. Minimum sample mass as function of mass-fraction of
largest-size class in a well-mixed bulk material
and required precision
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