gázpycnométer
A gas pycnometer is an analytical instrument used to determine the true density of solid materials, powders, and porous substances. The device operates on the principle of measuring the volume displaced by the sample when saturated with an inert gas, typically helium, under controlled temperature and pressure conditions. The apparatus is composed of a sealed measurement chamber, a gas filling line, a gauge system for pressure and temperature monitoring, and a calibration system that allows for precise volume determinations.
During measurement, the chamber is first evacuated to remove ambient air, then filled with a known quantity
Gas pycnometers find widespread use in pharmaceutical, polymer, metallurgy, and geology industries for quality control, property