10 replies to this topic

[josse]

Hallo all,

I was wondering if anyone here could explain me how the MPN method table works.
I know what it is and how to work with it, but I cant figure out what math is behind the shedule.

So my question in short is: how is the MPN table build?
I cant seem to find a general mathmodel or simple formula to calcute the MPN myself instead of looking it up at some table.

any ideas?

[smallcat227]

Oh, the math behind the shedule? It's really hard to say, the attachment may help you

Regards

Attached Files

•  MPN.pdf   321.14K   411 downloads

Edited by smallcat227, 14 March 2009 - 01:24 AM.

[josse]

yeah, I really want to know the math behind it.

I'll look into your file, but at first sight it doenst really explain how they formed the tables (mpn index).

Any idea who created this method?

If I am not mistaken you guys always simply use the tables to check how much g/ml , correct?

[smallcat227]

josse, on Mar 15 2009, 06:35 PM, said:

yeah, I really want to know the math behind it.

I'll look into your file, but at first sight it doenst really explain how they formed the tables (mpn index).

Any idea who created this method?

If I am not mistaken you guys always simply use the tables to check how much g/ml , correct?

Yes, I also use the table, you can think it comes from the statistical rules.

[josse]

smallcat227, on Mar 25 2009, 10:20 AM, said:

josse, on Mar 15 2009, 06:35 PM, said:

yeah, I really want to know the math behind it.

I'll look into your file, but at first sight it doenst really explain how they formed the tables (mpn index).

Any idea who created this method?

If I am not mistaken you guys always simply use the tables to check how much g/ml , correct?

Yes, I also use the table, you can think it comes from the statistical rules.

It does indeed come from some statistical rules, but I do not seem to find any answer.
The people I spoke , all use it, but no one seems to really know whats behind it.

I found one important literature link, however I can not seem to find this article.
==> J. L. Oblinger and J. A. Koburger. 1975. "Understanding and Teaching the Most Probable Number Technique." J. Milk Food Technol. 38(9): 540-545.
It is the only literature reference I could find about the subject, but the article itself is almost impossible to find I think.

Edited by josse, 05 April 2009 - 08:33 AM.

[pito]

josse,

check the following link (with pfd files on the document, just click on the links)


MPN

[josse]

Thanks a lot pito, thats usefull too.

Thanks to phage434 I have a copy of the file I was looking for: see attatchment.

Attached Files

•  mpn.pdf   736.29K   1744 downloads

[squidly]

josse thanks heaps for putting up that oblinger paper i was about to jump off something looking for that. cheers

[pito]

squidly, on Mar 4 2010, 02:05 AM, said:

josse thanks heaps for putting up that oblinger paper i was about to jump off something looking for that. cheers

The file has 93 downloads!

It seems you are not the only one that is downloading this file squidly.

lol

I wonder who, I know one extra : me  

[censmbe]

Thanks for the oblinger paper i have just spent 2 hours googling to find it!

[josse]

300 downloads allready
wow

Edited by josse, 24 August 2012 - 11:38 AM.