Laboratory Analysis

Particle Size Distribution (continued)

Soil Science Basics

Soil & the Environment

Working with soil

Soil & Students

Soil & Agriculture

3. When the soil and dispersing solution are thoroughly mixed, set the beaker aside in a safe place and allow it to sit for roughly 24 hours (for this step, the soil/dispersing solution mixture can sit over the weekend until the next class).

beaker sitting with solution

4. Measure the distance between the 500 mL mark and the base of the cylinder. (You can place the measuring stick inside the cylinder to get this measurement.).

measuring distance to 500 mL

5. Read the temperature at which your hydrometer has been calibrated (such as 15.6° C [60° F] or 20° C) which is found on the body of the hydrometer.

Temperature calibration information on hydrometer

Record both the distance and the temperature on the Particle-Size Distribution Data Work Sheet.

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