product of the time-constant of re-aeration, KLa (upper case K), and the volume of
the experimental reactor, Vol. The standardised mass transfer measurement, KLa20
may be taken from the product of the observed KLa, and a temperature correction
factor, (20°C−T), where the base may have a value of 1.024. Standard oxygen
transfer rate (SOTR) may then be determined from the volume of water in the test
tank using Eq. (2) to represent the maximum oxygen transfer rate,