Version 10.0.0.98

This 10.0.0.98 version of Refprop is mostly identical to the 10.0.0.78 version released June 2022. If you would like to help us debug the current alpha, please let us know and we'll send it to you. As bugs are found in the alpha, we update the website with the new DLLs once the bugs have been corrected.

Place the following two files in your Refprop directory to use the current beta version.

REFPROP.DLL
REFPRP64.DLL

Please bookmark this page because you will need to return here when the DLLs expire on Feb. 15, 2023, to obtain new DLLs with a later expiration date.

Contacts: Ian Bell (Ian.Bell@nist.gov)

Last updated: February 17, 2022