With the hydrometer method, a sample is first cleaned of organic matter. It is then weighed and dried, suspended in water, and sieved.
The solution that passes through the sieve is transferred to a measuring cylinder with water. Hydrometer readings are then taken at regular intervals. These hydrometer readings, combined with sedimentation time, are used to determine the grain sizes according to the Stoke’s Law.
SCOPE OF DELIVERY
- A number of hydrometers
- Sedimentation cylinders
- Thermometer
- Glass container
- Heating element with thermostat and stirrer
- Soil stirrer
- Various accessories
The hydrometer set is used to analyse smaller fractions of soil samples. To perform a complete analysis of the grain-size of soil samples, the granular composition test set is required for the analysis of coarse fractions and a pipette apparatus for fractions smaller than 38 μm.
