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March 2020

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Subject:
From:
"Berman, Alison" <[log in to unmask]>
Reply To:
The Pharmaceutical Microbiology Forum Email List <[log in to unmask]>
Date:
Thu, 19 Mar 2020 19:05:01 +0000
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Refer to USP <1231> which suggests paying more attention to the trends in data for very clean water systems that usually have ZERO CFU as recovery.
It's in the alerts and actions section (special) near the end of the chapter. A statistical approach may not be appropriate for you.

-----Original Message-----
From: The Pharmaceutical Microbiology Forum Email List [mailto:[log in to unmask]] On Behalf Of Abrar Ali
Sent: Thursday, March 19, 2020 10:25 AM
To: [log in to unmask]
Subject: [PMFLIST] How to establish statistical alert and action limit for water system performance?

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Dear Forum Members,

Please suggest me how to establish statistical alert and action limit for water system performance?
For the trend analysis I want to know how to establish the alert and action limit when the results are alway less than 1 cfu/ml. Please suggest what is the best way to calculate it.

Abrar Ali








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