Nist Refprop 9.1 Download ((hot)) Jun 2026

Why is this important?

(open-source or freemium):

If you are currently using Version 9.1 and need to maintain compatibility: Nist Refprop 9.1 Download

Execute the setup file and choose a directory (default is C:\Program Files (x86)\REFPROP ).

If your organization already owns a site license for REFPROP 9.1 (purchased years ago), you may be able to access the installer through your internal software repository. Contact your IT department or the original purchaser. NIST can also re-issue a download link to verified previous customers – you will need proof of purchase (order number, registered email). Why is this important

The only legal way to obtain the full REFPROP 9.1 (or the current version) is through the NIST Standard Reference Data (SRD) program.

as of 2018. While it remains a critical legacy tool for many researchers, it is no longer the primary version for new installations. 1. Official Download and Availability Direct Purchase : NIST REFPROP is a paid proprietary software Contact your IT department or the original purchaser

Once you have legally obtained the installer (typically a .exe file named something like REFPROP9.1_setup.exe ), follow these steps.

For a deep dive into the models used, the paper " The NIST REFPROP Database for Highly Accurate Properties... " (2022) describes the underlying thermodynamic equations. REFPROP | NIST

Seamless linking with Excel, MATLAB, LabVIEW, and C++. How to Download NIST REFPROP 9.1