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Measurement of Uncertainty in low count ISO/TS 19036:2006

Microbiological MU low coun

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#1 Hasmukh Amin

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Posted 25 January 2019 - 12:17 PM

Hi,

 

I need some guidence/procedure for the calculation of microbiological measurement of uncertainty in low count  like fruit & vegetable liquid products as per ISO/TS 19036:2006/Amend-1:2009 , please any one can help in explaining formula & calculation ASAP ?

 

Best Regards



#2 Hank Major

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Posted 28 January 2019 - 08:23 PM

I assume that you are riffing off of this: https://www.isobudge...crobiology-labs

 

Anyway, it is best to begin with a bit of theory. Microbial plate counts are done with numbers in our human counting system, but microbes multiply by a doubling process. That's why the first step is to take logs base 10. This will convert the numbers into microbial generations.

 

Take a look at the about link and see if that helps.



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#3 Charles.C

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Posted 28 January 2019 - 09:30 PM

Hi,

 

I need some guidence/procedure for the calculation of microbiological measurement of uncertainty in low count  like fruit & vegetable liquid products as per ISO/TS 19036:2006/Amend-1:2009 , please any one can help in explaining formula & calculation ASAP ?

 

Best Regards

 

Hi Hasmukh Amin,

 

The enclosed attachment contains  worked examples using the above mentioned Standard -

 

Attached File  Use of iso19036 to Estimate Uncertainty.pdf   2.52MB   37 downloads

(see Pg 35 et seq and Annex XI)


Kind Regards,

 

Charles.C


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