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Ambient air testing - Where to put the plates?

air testing

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#1 BostonCream

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Posted 25 March 2020 - 02:45 PM

Hello folks,

 

We are a honey manufacturer under SQF. In the recent ambient air testing, I noticed the count in hot room (place to melt honey) was as high as 100+ yeast and mold, and 50+ HPC. The plates were put on ground level, where it was dark and humid.

 

As a corrective action, I did another 5 tests at 5 locations in the hot room. This time the plates were put on honey tank edges (around 1 meter height), right under the ventilation fan. The results came back perfectly at 0 or 1 total count. 

 

I will dig into more research to find a proper air testing procedure in hot and dark environment. Maybe do a another comparison test at the same time. But can anyone share their opinions on this? Do you think the location/height is the reason for such difference?? 

 

Thanks!

 



#2 pHruit

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Posted 25 March 2020 - 03:22 PM

Did you redo the test in the same location as the original plates, and/or do you have data from previous sampling in the same location with which you can make a comparison? i.e. are the first set of results actually anomalously "high", or is this typical of the counts in that area?
 



#3 BostonCream

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Posted 25 March 2020 - 07:16 PM

Did you redo the test in the same location as the original plates, and/or do you have data from previous sampling in the same location with which you can make a comparison? i.e. are the first set of results actually anomalously "high", or is this typical of the counts in that area?
 

 

 

Hello pHruit, I did the 5 additional testing at locations different than the first time. I think the fist result was "high" as compared to last year.

I will maybe do a comparison test at both locations at the same time.

Thanks!







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