Figure 13-16.—Data sheet for hydrometer analysis.1,000-mL graduation. Bring the suspension to theCalculationstemperature expected to prevail during the test.Readings taken with the hydrometer requireVigorously agitate the solution for 1 minute beforetaking and recording (fig. 13-16) your first hydrometercorrection due to the following factors: (1) thereading. Then, without further agitating the solution,difference between the test temperature at each readingtake and record additional readings after elapsed timesand the standard temperature of 68°F, (2) the affect ofof 4, 15, and 30 minutes and 1, 2, 4, and 24 hours.the dispersing agent on the liquid density of theRemove the hydrometer from the suspension after eachsoil-water suspension, and (3) the difficulty of readingreading and place it in a graduate of clean water.the hydrometer at the meniscus of the murky soil-water13-18
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