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Hydrometer Method Improved for Making Particle Size Analyses of Soils 1
Author(s) -
Bouyoucos George John
Publication year - 1962
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1962.00021962005400050028x
Subject(s) - soil water , particle size , particle size distribution , environmental science , particle (ecology) , dispersant , soil science , agronomy , chemistry , geology , physics , dispersion (optics) , biology , oceanography , optics
Synopsis The time required for dispersing soils for the hydrometer method of making particle size analyses was reduced from 25 minutes to only 2 minutes. The procedure consists of soaking the soils in a 5% Calgon solution for 15 to 20 hours and then dispersing them with a soil mixer running at a speed of about 16,000 r.p.m., for 2 minutes.