ABSTRACT
The determination of specific volume change requires the measurement of sample volume change with reasonable accuracy. The sample volume change is given by: ΔV = ΔVa + ΔVw where ΔVa and ΔVw are air volume change and water volume change, respectively. The change in volume of water can be measured using common laboratory techniques. However, measurement of air volume change is not straightforward since air is highly compressible and will also slowly diffuse into the surrounding cell fluid (usually water).
