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Subject:
From:
Bob Friedel <[log in to unmask]>
Reply To:
The Pharmaceutical Microbiology Forum Email List <[log in to unmask]>
Date:
Tue, 10 Mar 2020 13:17:34 -0400
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Convert the plate counts to log10 values.  Take the difference between the two.  It should not be more than 0.5 log10.

Bob


> On Mar 9, 2020, at 7:10 PM, sam taba <[log in to unmask]> wrote:
> 
> Dear members,
> 
> Can anyone explain & interpret clearly with an example the following
> criteria from USP 51?
> 
> No Increase in counts is defined as NMT 0.5 log10 unit more than the value
> to which it is compared.
> 
> Thanks for your input
> 
> Have a wonderful day
> Sam T
> 
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The PMFList (http://microbiologynetwork.com/pmflist.asp) is operated from
The Microbiology Network (http://microbiologynetwork.com) and supported by
our sponsors as a service to the scientific community.

Please take a second to visit our sponsors' web sites and say thank you for their support of this service.
If your company would be interested in sponsoring this community, please contact [log in to unmask]



Steris - http://www.sterislifesciences.com/

Charles River Laboratories - http://www.criver.com/

Veltek Associates, Inc - http://www.sterile.com

Microbiologics, Inc. - http://www.microbiologics.com

BD Industrial Media - http://www.bd.com/ds/

Associates of Cape Cod, Inc. - http://www.acciusa.com/


=================================
The nature of this service is to provide a medium for communication.  The specific statements and endorsements of individuals participating in the discussions are not necessarily those of The Microbiology Network, Inc., the PMF, or the sponsors of the list.

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