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AS 4784-2003

Current
Current

The latest, up-to-date edition.

Sample preparation for particle size analysis - Dispersing procedures for powders in liquids (Reconfirmed 2016)
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

10-04-2003

Preview

Sets out procedures for wetting a powder into a liquid, deagglomerating the wetted clumps, determining if solution composition can be adjusted to prevent reagglomeration, selecting dispersing agents to prevent reagglomeration and evaluating the stability of the dispersion against reagglomeration. This Standard is applicable to particles ranging in size from approximately 0.05 to 100µm. This Standard is identical with and has been reproduced from ISO14887:2000.

This International Standard was developed to help particle size analysts make good dispersions from powder/liquid combinations with which they are not experienced. It provides procedures for- wetting a powder into a liquid;- deagglomerating the wetted clumps;- determining if solution composition can be adjusted to prevent reagglomeration;- selecting dispersing agents to prevent reagglomeration;- evaluating the stability of the dispersion against reagglomeration.This International Standard is applicable to particles ranging in size from approximately 0,05 to 100 µm. It provides a series of questions on the nature of the powder and liquid involved. The answers are used with charts that guide the user to generic dispersing agents that are likely to be suitable for dispersing the powder in the liquid.This International Standard applies only to the preparation of simple, dilute dispersions (less than 1 % by volume solids) for particle size analysis. It does not deal with the formulation of complex and commercial mixtures highly loaded with solids, such as paints, inks, pharmaceuticals, herbicides and composite plastics.

Committee
CH-032
DocumentType
Standard
ISBN
0 7337 5107 5
Pages
24
ProductNote
Reconfirmed 23/09/2016.This standard has been reconfirmed in Australia in 2016 and remains current in New Zealand. Reconfirmation Notice 23/09/2016
PublisherName
Standards Australia
Status
Current
Supersedes

Standards Relationship
ISO 14887:2000 Identical

First published as AS 4784-2003.Reconfirmed 2016. First published as AS 4784-2003.

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