Scientific, information & consultancy services for the food industry

Calculate time required to reduce a microbial-population to a target number of survivors

To use the calculator insert your data into the form elements and press submit to obtain prediction.

Initial numbers of organism (CFU/mL) e.g.100 CFU/mL
D value (seconds) of organism

 e.g. 14 seconds
Target number of surviving organisms (CFU/mL) e.g. 0.1 CFU/mL

NOTE! The science and mathematics behind this calculator are described in the modeling exercise to investigate the survival of Mycobacterium avium subsp. paratuberculosis following HTST treatment of milk.

How to cite this article

Mullan, W.M.A. (2010) [On-line] UK: Available: Accessed: