The various formulations used by RIDS have limits cited by the authors. RIDS respects those limits and will not provide calculated results that extrapolate beyond the cited ranges. If you enter a parameter out of range, the affected output fields will be greyed out. If your entry exceeds the maximum global range, it will be rejected and you will receive a warning to enter a value within range.

Following are the limits of entry and the affected outputs:
Formulation Temperature Pressure Wavelength Solids/Salinity Affected Output(s)
IAWPS-95 -100 ≤ °C ≤ 2000 Vapor pressure of water
IF97 0 ≤ °C ≤ 800 MPa ≤ 100 Density, Enthalpy of water
800 ≤ °C ≤ 2000 MPa ≤ 50 Density, Enthalpy of water
0 ≤ °C ≤ 500 0.2 ≤ µ ≤ 1.1 RI of Water
0 ≤ °C ≤ 373.946 Saturation properties
TEOS-10 -6 < °C < 40 dbar < 50 g/kg ≤ 42 Density, Enthalpy of seawater
Seaver-Millard 0 < °C < 30 dbar < 10,000 0.5 ≤ µ ≤ 0.7 g/kg ≤ 40 RI of seawater
CRA 0 < °C < 60 1.0 atm 589.3 nm %ds ≤ 80 RI/DS relationship of syrups
Ciddor -40 < °C < 100 80 ≤ kPa ≤ 120 0.3 ≤ µ ≤ 1.69 RI of Air