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BSI
BS 3406-1:1986

BS 3406-1:1986

Current

Current

The latest, up-to-date edition.

Methods for determination of particle size distribution Guide to powder sampling

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-10-1986

Publisher

British Standards Institution

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

Recommended methods for the subdivision of laboratory powder samples into test portions suitable for analysis by methods for the determination of the particle size distribution described in other Parts of this standard and for particle characterization analysis described in other British Standards.

This Part of BS 3406 provides guidance on powder sampling. It recommends methods for the subdivision of gross or laboratory powder samples into test portions suitable for analysis by methods for the determination of the particle size distribution described in other Parts of BS 3406 and for particle characterization analyses described in other British Standards. Ways of obtaining very small test portions are described.

This Part of BS 3406 indicates points to look for in a preliminary examination of the sample to assist in the selection of the most appropriate method to subdivide the powder in question. Factors affecting this selection are considered and recommendations made to ensure that the integrity of the sample is maintained throughout the subdivision process. Appendix A gives the results of investigations by several workers into the relative efficiencies of the sample dividing methods.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

Committee
LBI/37
DevelopmentNote
Supersedes 83/79599 DC and BS 3406-1(1961) (07/2005) Reviewed and confirmed by BSI, November 2012. (10/2012)
DocumentType
Standard
Pages
34
PublisherName
British Standards Institution
Status
Current
Supersedes

BS 4359-3:1970 Methods for the determination of specific surface of powders. Calculation from the particle size distribution
BS 6000:1972 Guide to the use of BS 6001, sampling procedures and tables for inspection by attributes
BS 5660:1979 Methods of sampling iron ores. Increment sampling. Manual method
BS 5662-3:1979 Methods of sampling iron ores Experimental methods for checking the bias of sampling
BS 2955:1958 Glossary of terms relating to powders
BS 4359-2:1982 Determination of the specific surface area of powders Recommended air permeability methods
BS 1796:1976 Method for test sieving
BS 1017:1942 Methods for sampling of coal and coke
BS 6002:1979 Specification for sampling procedures and charts for inspection by variables for percent defective
BS 5661:1979 Methods of testing iron ores - preparation of samples
BS 3406-4:1963 Methods for determination of particle size distribution Optical microscope method
BS 4359-4:1995 Determination of the specific surface area of powders Recommendations for methods of determination of metal surface area using gas adsorption techniques
BS 5309-4:1976 Methods for sampling chemical products Sampling of solids
BS 5662-1:1979 Methods of sampling iron ores Experimental methods for evaluation of quality variation
BS 6001(1972) : AMD 5054 SAMPLING PROCEDURES FOR INSPECTION BY ATTRIBUTES - SPECIFICATION FOR SAMPLING PLANS INDEXED BY ACCEPTABLE QUALITY LEVEL (AQL) FOR LOT - BY - LOT INSPECTION
BS 5662-2:1979 Methods of sampling iron ores Experimental methods for checking the precision of sampling

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