2 replies to this topic

[Hasmukh Amin]

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

[Hank Major]

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.

[Charles.C]

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 -

 

 Use of iso19036 to Estimate Uncertainty.pdf   2.52MB   48 downloads

(see Pg 35 et seq and Annex XI)