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.

TO-046