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What do you test for when testing water and air in a food manufacturer

air water testing coliforms tpc apc

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#1 MBrown042

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Posted 14 January 2014 - 05:04 PM

Hello All,

 

I work at a food manufacture and we are going to be taking some water samples and air samples to the lab, and I want to know what to test for.

 

What do you test for when testing water and air in a food manufacture?

 

Do I test for Coliforms, TPC, Yeast and Mold ect.  Im not positive on what to test for when testing water and compressed air.

 

Also what is a bad test?  What is a high count for TPC or coliforms?

 

Please let me know your thoughts.

 

Thank you,

 

Marvis Brown

 

SQF Practitioner


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#2 Charles.C

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Posted 14 January 2014 - 05:20 PM

Dear MBrown,

 

My first thought was that you should ask an SQF Practitioner. :smile:

 

I assume the water is required to be "potable".

 

There are US standards for this which are detailed/linked in other threads here (from memory posted by myself et al).

 

Compressed air is i suspect a bit more obscure in the official sense. This topic in an SQF context (from memory the Code does have some info. as per yr query)  has also been previously discussed here in some detail and with considerable disagreement over certain issues. 

 

Try search "potable" or "drinking" / "compressed" perhaps ?

 

Rgds / Charles.C


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Kind Regards,

 

Charles.C


#3 Marshenko

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Posted 14 January 2014 - 05:25 PM

I just test ambient air and compressed air for total plate count... then we send out water samples on a regular basis and test for coliforms and HPC.


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#4 dl1888

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Posted 14 January 2014 - 05:35 PM

SQF needs to come out with a standard for testing compressed air. There is to much uncertainty in the food industry in terms of what is needed to be tested and what acceptable levels are; aerobic plate count, Total Coliform, mold count and yeast count. I have my procedure stating that Testing areas should not exceed 15 microorganism colonies per plate during a sample period.

 

Is my procedure a well developed? I don't know, I don't have anything to compare it to. The best comparison I had was to compare it to the dairy industry standards for testing compressed air. 15 microorganism colonies was stated in a dairy industry article i read and is where I got my critical limit from.

 

Am I covering all my basis with testing the above 4 areas? I don't know, I don't have anything to compare it to. I asked a label and they informed me this is what they normally test for, so I went with it.

 

I am however compliant with what the SQF code, at least thats what my auditors in the past have told me.

 

Very Frustrating...


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#5 MBrown042

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Posted 14 January 2014 - 06:00 PM

Thank you all. This is helpful.


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#6 Marshenko

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Posted 14 January 2014 - 06:41 PM

SQF needs to come out with a standard for testing compressed air. There is to much uncertainty in the food industry in terms of what is needed to be tested and what acceptable levels are; aerobic plate count, Total Coliform, mold count and yeast count. I have my procedure stating that Testing areas should not exceed 15 microorganism colonies per plate during a sample period.

 

Is my procedure a well developed? I don't know, I don't have anything to compare it to. The best comparison I had was to compare it to the dairy industry standards for testing compressed air. 15 microorganism colonies was stated in a dairy industry article i read and is where I got my critical limit from.

 

Am I covering all my basis with testing the above 4 areas? I don't know, I don't have anything to compare it to. I asked a label and they informed me this is what they normally test for, so I went with it.

 

I am however compliant with what the SQF code, at least thats what my auditors in the past have told me.

 

Very Frustrating...

 

Yeah.  I've had a desk audit, pre-assessment, certification and surveillance audit, and I am almost entirely sure that my auditor still hasn't even looked at my testing procedures, so really who knows?


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#7 Trace Analytics

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Posted 15 January 2014 - 12:13 AM

Hello All-

 

Here is what SQF has said about testing compressed air.  Notes in quotes can be found on their website at sqfi.com.

  1. “Food processing facilities need to operate from a fundamental assumption that compressed air can be a source of chemical and microbiological contamination.”
  2. “The site must verify and validate that the compressed air used in the facility is appropriate for use and not a source of contamination.”
  3. "Microbiological testing can include testing for aerobic plate count and/or indicator organisms as appropriate to the operation. Testing for moisture should be considered if moisture is a potential risk to the product (e.g., dry operations). Aseptic sample collection should be used. "

 

At Trace Analytics we typically see food manufacturers testing for particles, water, oil and microbiological contaminants.  Testing for gases is also available if needed.  The BCAS and ISO 8573 are great sources when trying to determine the contaminants and allowable limits that your company would like to test for.  The BCAS states that compressed air coming in Direct Contact with food shall meet ISO 8573-1:2010 Purity Class 2:2:1; Indirect Contact 2:4:2.  ISO 8573 provides classes with allowable limits but does not suggest what limits are acceptable for various uses.  They leave choosing classes to the user.

 

If you would like more literature on compressed air testing or a quote please feel free to contact me directly.  We are always happy to assist you with establishing you compressed air purity testing program.

 

Laura Gunn

Laura@AirCheckLab.com


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#8 AS NUR

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Posted 15 January 2014 - 12:50 AM

I tested coliform, sensory (aroma, etc) and chemical parmeters (pH, TDS etc) for water and i used potable water for standard. And for Compressed air i tested TPC. 

 

 

Rgds

 

AS Nur


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#9 lmugs

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Posted 15 January 2014 - 06:55 AM

Potable water you test for total coliforms(which should be nil per 100ml), TVC, TOP, Conductivity, pH, TDS, Fe content if you use Ferrous for your water treatment. For air you need to focus on yeast and moulds. 


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#10 agnes

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Posted 15 January 2014 - 08:26 AM

Hi ,

We test water for:

- chlorine, hardness, iron,

- TTC, coliforms, E, coli, taste, colour, odour

 

Regards

Agnes


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Agnes

#11 matheusdb

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Posted 15 January 2014 - 08:46 AM

Coliforms and PH


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