BS 3406-4:1963
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Methods for determination of particle size distribution Optical microscope method
Hardcopy , PDF
15-02-1993
English
01-04-1984
In fractions of powders which pass 75 micron British Standard test sieve. Sample dispersed, placed on glass slide and particles viewed through microscope by transmitted light. Areas of magnified images of particles compared with areas of reference circles of known sizes inscribed on graticule and simultaneously visible (see BS 3625). Relative numbers of particles in each of series of size classes determined. These numbers, expressed as percentages, constitute size distribution by number. From relative numbers in size classes, size distribution can be calculated by weight if it is assumed that particles of all sizes have same shape and density.
| Committee |
LBI/37
|
| DevelopmentNote |
BS DRAFT 91/78205 DC REFERS TO A NEW REVISION
|
| DocumentType |
Standard
|
| Pages |
72
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS 3406-7:1988 | Methods for determination of particle size distribution Recommendations for single particle light interaction methods |
| BS 3406-1:1986 | Methods for determination of particle size distribution Guide to powder sampling |
| BS 5295-1:1989 | Environmental cleanliness in enclosed spaces Specification for clean rooms and clean air devices |
| BS 4398:1969 | Specification for compounding ingredients for rubber test mixes |
| BS 3625:1963 | Specification for eyepiece and screen graticules for the determination of the particle size of powders |
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