The application of the electronic balance in high precision pycnometry

Abstract

Pycnometers are used to measure the density of fluids. Usually pycnometer volume is determined by measuring the mass and temperature of contained water and thereafter is used to determine the density of contained fluids by further weighing. Hie calibration and use of the pycnometer can be achieved on a modem electronic balance without the use of the usual set of mass standards. This paper explores the electronic balance application to pycncmetry, presents supporting data with analysis and discusses a pycnometer design. INTROTOCTICNPycnometers are essentially flasks whose internal capacity has been determined by weighing the vessel em p ty and again when filled with water. The pycnometer