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Pre and Post Heat Treatment cfu/swab Levels

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oahr1996

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Posted 04 September 2025 - 09:15 PM

Hello,

 

My facility wants to revise our environmental monitoring program based on the sites that get swabbed pre heat treatment to our product and post heat treatment. What is a generally acceptable level for APC, EB, and Yeast/Mold for pre and post heat treatment? Would it be something around 5,000 cfu/swab or 10,000 cfu/swab? What would be the rationale behind choosing these levels?


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Tony-C

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Posted 05 September 2025 - 03:32 AM

Hi oahr1996,

 

Levels are usually quoted per cm2.

 

See the Micro. Guidelines for Food Contact Surfaces forum here.

 

https://www.ifsqn.co...ces/#entry60958

 

The late great Charles C, posted a Compilation of International Micro. Guidelines for food contact surfaces, 2000 onwards

 

Kind regards,

 

Tony


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GMO

GMO

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Posted 05 September 2025 - 04:14 AM

A question.  Why are you swabbing pre heat treatment?

 

I had a site a long time ago using root vegetables and they were swabbing surfaces where there was still soil and trying to come up with a corrective action for a high swab count.  I couldn't convince the TM nor group that swabbing in that location was pointless.


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G M

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Posted 11 September 2025 - 06:58 PM

Hello,

 

My facility wants to revise our environmental monitoring program based on the sites that get swabbed pre heat treatment to our product and post heat treatment. What is a generally acceptable level for APC, EB, and Yeast/Mold for pre and post heat treatment? Would it be something around 5,000 cfu/swab or 10,000 cfu/swab? What would be the rationale behind choosing these levels?

 

Like GMO I'm wondering why you would bother to regularly test the pre-lethality area?

 

As a ballpark range 5-10k for Y/M and APC are values I've seen in a few places.  In some ways it depends on your product, shelf life, etc. what is tolerable.  


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