Calculator for determining the Decimal Reduction Time (D) for a microorganism knowing the D-value at the reference temperature and the Z-value using the Bigelow method and the Arrhenius equation.

Reference Temperature (Tr)
e.g. (72°C)

D value (s) at Tr
Z value (°C)

Temperature (°C) at T1. May be higher or lower
than the Tr


NOTE! The science and mathematics behind this calculator will be described in a tutorial that will be added over the next few months.