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Published in Soil Sci Soc Am J 25:357-359 (1961)
© 1961 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Preparation of Sensitive Linear Density Gradients1

Alvin H. Beavers2

ABSTRACT

A mechanical method is described for making linear density gradients sensitive to differences of 1 x 10-6 g. per ml. Two miscible liquids of different densities are mechanically mixed to form a linear density gradient within the range of their densities. These gradients can be used for a wide variety of investigations such as density measurement of aqueous solutions and colloidal suspensions and measuring density changes accompanying chemical reactions.

NOTES

1 Contribution from the Department of Agronomy, University of Illinois, Urbana. Published with the approval of the Director of the Illinois Agr. Exp. Sta.

2 Associate Professor Soil Mineralogy.

Received for publication December 19, 1960. Accepted for publication January 10, 1961.






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