for calculating the properties of water and steam I have Prode Properties,
the operating manual does not mention the range of T, P for the IAPWS 1995 model
which is the most accurate available (for water & steam) in PRODE,
Prode allows to calculate a density above 1000 Bar
while for thernal conductivity the range seems more limited,
other properties as isothermal compressibility for liquid state
in some cases return 0 as value (depending from T, P),
does that suggest an error or a limit in the
range of application ?