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Stephanie L. Outcalt (Fed)

Ms. Outcalt received her bachelor's degree in Chemical Engineering from the University of Colorado in 1987 and has been employed at NIST since graduation. She began at NIST measuring the fugacity of hydrogen in mixtures of importance to the fuel gas industry which figured into the development of equations of state for natural gas and liquefied petroleum gas. As part of this work, she was also involved with the development of analytical methods and devices for fuel gas, and was part of the development of analytical sampling and detection devices. More recently, she has advanced measurements in a number of thermophysical properties, among them solubility, vapor pressure, density and bubble point.  She has led the development of standard practices in the application of vibrating tube densimetry, a field in which she is recognized worldwide as an authority.

Ms. Outcalt also worked on correlations of equations of state for some of the early alternative refrigerants. Her current areas of focus include the measurement of compressed-liquid densities of fuels and their constituents and measuring bubble points of binary mixtures as potential new refrigerants. When not working, Ms. Outcalt is an avid swimmer and cyclist.


NIST Certificate of Appreciation, for "Outstanding Contributions to the Standard Reference Data Program in the area of high-accuracy refrigerant properties." 1994

Building Tomorrows' Workplace Award for "significant contributions in creating an inclusive workforce and working toward achieving affirmative employment and diversity goals."  2007

United States Department of Commerce Bronze Medal  for "leadership in development of novel instrumentation, standard practices for operation, measurement and uncertainty for vibrating-tube densimetry."  2016


Low-GWP Alternative Refrigerant Blends for HFC-134a: Interim Report

Piotr A. Domanski, Mark O. McLinden, Valeri I. Babushok, Ian Bell, Tara Fortin, Michael Hegetschweiler, Mark A. Kedzierski, Dennis Kim, Lingnan Lin, Gregory T. Linteris, Stephanie L. Outcalt, Richard A. Perkins, Aaron Rowane, Harrison Skye
This project addresses the objectives of the Statement of Need number WPSON-17-20 "No/Low Global Warming Potential Alternatives to Ozone Depleting Refrigerants

Thermophysical Properties of Polyol Ester Lubricants

Thomas J. Bruno, Tara Fortin, Marcia L. Huber, Arno D. Laesecke, Eric Lemmon, Elisabeth Mansfield, Mark O. McLinden, Stephanie L. Outcalt, Richard A. Perkins, Kimberly N. Urness, Jason A. Widegren
This report summarizes the results of work performed for the Naval Air Warfare Center Aircraft Division by the National Institute of Standards and Technology
Created October 9, 2019, Updated June 15, 2021