A Soil Air Pycnometer for Determination of Porosity and Particle Density

ABSTRACT A soil air pycnometer, using the core sampler as the measuring chamber for porosity measurement was developed. The experimental results showed that the precision of this apparatus was as good as the specific gravity bottle technique and yet it was faster and ap-plicable for intact soils. The simplicity in construction and operation and its applicability to field use were the main advantages of this apparatus.