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A sedimentation method for the determination of the effective particle size distribution of DDT dispersible powders

✍ Scribed by W. D. E. Thomas

Publisher
John Wiley and Sons
Year
1956
Tongue
English
Weight
489 KB
Volume
7
Category
Article
ISSN
0022-5142

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✦ Synopsis

Abstract

A modified Andreasen sedimentation method is described for the analysis of the DDT and carrier constituents of DDT dispersible powders.

As an illustration of the use of the method, a 1% (w/v) aqueous suspension of the powder is sampled with a pipette at four different times from the commencement of settling. Variation of concentration of dispersible powder in the suspension within the range 0.2–2.0% (w/v) is without effect on the results. The method is shown to be suitable for use at any temperature (Β±0.05Β°) within the range 10–30Β°.

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