Normal of conditions

Normal of conditions for temperature and pressure are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data.

Pressure = 1 bar

Temperature = 273,15 K

In natural science normal conditions term is often used as a less strict substitute for standard conditions.

The latter term supposes strict definition of environment parameters, and mentioning the standard, under which "standard conditions" are defined.

Since temperature and air pressure varies from place to place a standard reference is necessary for comparing the testing and the documentation of chemical and physical processes.