The vapor pressure is determined using a pressure gauge. Excessive variations in the pressure from container to container may indicate presence of air in the head space. Can puncturing equipments are used to accurately determine the pressure. There are equipments available for both metal and glass containers.

Density is determined by hydrometer or a pycnometer. The apparatus is suitably modified to determine the density of liquefied gas propellants.

Moisture content is determined using a Karl Fischer apparatus or by gas chromatography.

Qualitative and quantitative tests for propellants is done using IR spectroscopy and gas chromatography. The methods also indicate the proportion of each propellant in the blend.