Acting Group Leader: Dr. Mark McLinden NIST Physical and Chemical Properties Division Experimental Properties of Fluids Group Mail Stop 838.07 325 Broadway Boulder, CO 80305-3328 USA
Contact: +1-303-497-3580 +1-303-497-5224

The Experimental Properties of Fluids Group has extensive capabilities for wide-ranging, high-accuracy fluid properties measurements. It performs experimental research on the thermodynamic and transport properties of industrially important fluids and fluid mixtures covering temperatures from 30 to over 700 K at pressures up to 70 MPa; the full composition range is covered for mixtures. State-of-the-art instruments are employed to measure properties such as pressure-volume-temperature (PVT) behavior, vapor pressure and phase equilibrium (VLE) behavior, heat capacity, speed of sound, viscosity, and thermal conductivity. The group currently has strong programs in natural gas mixtures, aqueous systems, and alternatives to the chlorofluorocarbon (CFC) refrigerants. The group also carries out light and neutron scattering studies of fluids to gain a fundamental understanding of the microstructure of fluids. The group has a long history of research in fluid properties, and over the past 35 years, has provided comprehensive measurements on a wide variety of fluid systems including common inorganics, cryogens, hydrocarbons, supercritical fluids, and aqueous systems. It works closely with the Theory and Modeling of Fluids Group and others to provide the data needed to develop comprehensive formulations of fluid properties.