TO-046 - Pycnometer
Tests a wide range of materials from clay to sand and gravel, smaller than 10mm.
Supplied as a set of six.
Each consists of 1kg glass jar with brass cone, locking ring and rubber seal.
A pycnometer works on the principle of Specific Gravity, which defines the weight ratio of a given volume of material in air with respect to an equal volume of distilled water at the same stated temperature. Powdered soil is added to the pycnometer and weighed; the pycnometer is filled with a liquid of known density, in which the soil is completely insoluble and weighed. The weight of the displaced liquid can be determined and hence the specific gravity of the soil.