BS 3406-2:1984

Foreword
Committees responsible
Methods
1. Scope
2. Definitions
Section one. General
3. Principles
4. Calculation
5. Suspension and dispersion
6. Tests in duplicate
7. Report
Section two. The fixed position pipette (Andreasen)
method
8. Principle
9. Apparatus
10. Ancillary apparatus
11. Preparation
12. Procedure
13. Assay of fractions
14. Tests in duplicate
15. Report
16. Worked example (Andreasen pipette)
Section three. The variable position pipette method
17. Principle
18. Apparatus
19. Preparation
20. Procedure
21. Assay of fractions
22. Tests in duplicate
23. Report
Section four. Absorption of electromagnetic radiation:
the photosedimentation technique
24. Principle
25. Procedure
26. Evaluation
27. Calculation of cumulative percentage undersize
28. Tests in duplicate
29. Report
30. Worked example
Section five. Absorption of electromagnetic radiation:
the X-ray gravity technique
31. Principle
32. Apparatus
33. Preparation
34. Procedure
35. Calculation of results
36. Tests in duplicate
37. Report
Section six. Cumulative (sedimentation balance) methods
38. Principle
39. Apparatus
40. Preparation
41. Sedimentation procedure
42. Calculations
43. Tests in duplicate
44. Report
45. Worked example (sedimentation balance)
Appendices
A. Liquid suspending media
B. Combining a sieve and a sedimentation analysis
C. Reference materials
D. Correlation of results from different methods of
    size determination
E. Bibliography
Tables
1. Worked example (Andreasen pipette)
2. Pen recorder trace analysis of BCR 67 quartz
3. Conversion from surface to mass distribution:
    tabular method
4. Mass undersize evaluation from cumulative
    sedimentation data
5. Worked example (sedimentation balance): tabular
    solution
6. Worked example (sedimentation balance): graphical
    solution
7. Suspending liquids and dispersing agents
8. Combined sieve and sedimentation analysis
Figures
1. Methods
2. Fixed position pipette
3. The variable position pipette
4. Pen recorder trace. Wasp analysis of BCR 67 quartz
5. Conversion of surface distribution to mass
    distribution by graphical integration
6. Type 1 sedimentation balance
7. Type 2 sedimentation balance
8. Pen recorder reading against time for a sedimentation
    balance
9. Pen recorder reading (% deposited) against log e
    (time) for a sedimentation balance
10. Theory for the tabular technique
11. Combined sieve and sedimentation analysis
    (log-probability graph)

Recommends incremental and cumulative liquid sedimentation methods for determining the particle size of powders and suspensions and methods for obtaining a good dispersion in the suspension.