International Association for the Properties of Water and Steam
The International Association for the Properties fo Water and Steam (IAPWS) is an international non-profit association of national organizations concerned with the properties of water and steam, particularly thermophysical properties, cycle chemistry, and other aspects of high-temperature steam, water and aqueous mixtures that are relevant to thermal power cycles and other industrial applications.
Links between the BIPM and the IAPWS:
IAPWS presentation at the 20th meeting of the CCQM (2014).
BIPM presentation at the ICPWS16: 16th International Conference on the Properties of Water and Steam.
Development of a position paper on: "Metrological challenges for measurements of key climatological observables: Oceanic salinity and pH, and atmospheric humidity".
IAPWS is the co-opted member of CCT Working Group for Humidity (CCT-WG-Hu).