With this website, we provide some statistical programs for the evaluation of specific test methods / procedures.
These programs are provided freely in the hope that they are useful, but without any warranty.

The programs are made available as Excel-files and can be downloaded from the following table.
Additionally, we will provide online versions of the programs. Currently, you can use MPN online, see MPN.

Program Version Subject Download
BST
Version 1,
2024-11-13
Version 1,
2024-11-13
Design and evaluation of Binary Sensitivity Tests
according to C. Wilrich & P.-Th. Wilrich, Materials Testing, 2024, 66(11), 1931‑1944.
DOI: 10.1515/mt-2024-0176, see also www.researchgate.net/​publication/​384692608.
MPN
Version 6,
2018-11-07
Version 6,
2018-11-07
Derivation of Most Probable Numbers, their standard deviations, confidence bounds and rarity values
according to B. Jarvis, C. Wilrich & P.-Th. Wilrich, Journal of Applied Microbiology, 2010, 109(5), 1660‑1667.
DOI: 10.1111/j.1365-2672.2010.04792.x, see www.researchgate.net/​publication/​45093721.
The publication and the program are referenced in ISO 7218.
PODLOD
Version 12,
2024-03-05
Version 12,
2024-03-05
Estimation of the POD function and the LOD of a qualitative microbiological measurement method
according to C. Wilrich and P.-Th. Wilrich, Journal of AOAC International, 2009, 92(6), 1763‑1772. DOI: 10.1093/jaoac/92.6.1763, see www.researchgate.net/​publication/​41485250.
The publication is referenced in ISO 16140-2.
PODLOD-
interlab

Version 2,
2021-04-05
Version 2,
2021-04-05
Estimation of the POD function and the LOD of a binary microbiological measurement method from an interlaboratory experiment
according to B. Jarvis, C. Wilrich & P.-Th. Wilrich, Journal of AOAC International, 2019, 102(5), 1617‑1623.
DOI: 10.1093/jaoac/102.5.1617, see www.researchgate.net/​publication/​333264572.
RLOD
Version 4,
2024-01-10
Version 4,
2024-01-10
Determination of the Relative Level of Detection of two qualitative microbiological measurement methods according to I. Margaritescu & P.-Th. Wilrich, Journal of AOAC International, 2013, 96(5), 1086‑1091. DOI: 10.5740/jaoacint.12-377, see also www.researchgate.net/​publication/​258956385.
The publication is referenced in ISO 16140-2.

In case you would like to be notified when the programs have been updated or when new programs are provided, please send an e-mail with the subject 'Newsletter' to news@statistics-wilrich.info. The notifications are dedicated to inform about such revisions and thus will be sent very infrequently.

If you have questions on the programs, please e-mail to news@statistics-wilrich.info.