Swab testing standards & Air sampling standards for food industry
Hi ,
Please share standard requirement for below swab analysis and air quality monitoring using air sampler.
1) Hand swab for personal hygiene
2) Equipment swab for sanitation measure
3)Cloth swab
Regards
Bhavin
Swab tolerances
Microbiological surveillance
The following tolerances are to be used when assessing environmental swab results
Test
Tolerance
Pass
Caution
Fail
TVC
0 - 100
101 – 1000
> 1000
Pseudomonas
0 - 100
101 - 1000
> 1000
Enteros
< 10
10 – 100
> 100
(Hands) S. Aureus
< 10
10 – 100
> 100
(Hands) E.Coli
< 10
10 - 100
> 100
Overall average swab pass rate is 95%. Action should be taken when pass rates drop below 95% over a 4 week cycle.
Is this the sort of thing you are after?
Hi ,
Please share standard requirement for below swab analysis and air quality monitoring using air sampler.
1) Hand swab for personal hygiene
2) Equipment swab for sanitation measure
3)Cloth swab
Regards
Bhavin
Hi Bhavin Raval,
A specific decision may be related to the product/process/location/condition of surface.
Two "general" compilations for surfaces and compressed air (often equivalent to "air") are here -
http://www.ifsqn.com...ces/#entry60958
http://www.ifsqn.com...ent/#entry81054
Some further comments on "air"/compresed air here -
http://www.ifsqn.com...indpost&p=83052
http://www.ifsqn.com...an>-filtration/
@ Teecem - I presume the units in yr data are cfu/cm2 ?
I assume that "Caution" is equivalent to "Acceptable". if so, IMO yr values for TVC, S.aureus and E.coli are questionable but not forgetting the top caveat.
Thank you Charles.
I am looking for the same sort of infor, but thing is that if you are able to provide some standard reference which i can use as base to show it to auditors, then it will be great help.
Bhvain
Thank you Charles.
I am looking for the same sort of infor, but thing is that if you are able to provide some standard reference which i can use as base to show it to auditors, then it will be great help.
Bhvain
Hi Bhavin Raval,
Post #9 of the first link/thread for Indian swabs perhaps.
For air quality, the Book quoted in the third link and the 8 attachments in the second link.
Swab tolerances
Microbiological surveillance
The following tolerances are to be used when assessing environmental swab results
Test
Tolerance
Pass
Caution
Fail
(Hands) E.Coli
< 10
10 - 100
> 100
Overall average swab pass rate is 95%. Action should be taken when pass rates drop below 95% over a 4 week cycle.
Is this the sort of thing you are after?
I would question your standard for (Hands) E.coli
Also action levels may depend on the surface being swabbed, for instance I would act on an Entero positive on a food contact surface.
Regards,
Tony
Who decides this criteria?Swab tolerances
Microbiological surveillance
The following tolerances are to be used when assessing environmental swab results
Test
Tolerance
Pass
Caution
Fail
TVC
0 - 100
101 – 1000
> 1000
Pseudomonas
0 - 100
101 - 1000
> 1000
Enteros
< 10
10 – 100
> 100
(Hands) S. Aureus
< 10
10 – 100
> 100
(Hands) E.Coli
< 10
10 - 100
> 100
Overall average swab pass rate is 95%. Action should be taken when pass rates drop below 95% over a 4 week cycle.
Is this the sort of thing you are after?
Who decides this criteria?
Hi atwaiw,
You may need to be more specifc in yr query. Not sure if you mean Globa criteria for XYZ or for the specific data in yr quotation ?
For the quoted data, only Teecem knows. Personally, offhand, i don't recall ever seeing the data quoted (which has no units attached) as one group, or even individually in most cases.
If you mean Globally, as discussed in first link/Post3 (for surface swabs), there are no universally agreed limits for many, probably most, of the numerous count-based items. There are Guidelines/suggestions from a variety of authors and organisations, often oriented to specific applications, eg Dairy Industry, Cleanroom specifications.
For example, ISO's set of Standards are frequently quoted for discussing air quality.
More appropriate reference of these criteria set?
The units were cfu/cm2
In my experience I haven't been able to find any text which tells you what you should be looking for in terms of standard results the above was an example from a protein factory which time and experience had validated. I've only ever had an issue from an auditor when the tolerances were too high then they wanted to know how they could be justified. If the tolerances are reasonable for the business you are in and the type of product you are producing then they will accept them. That said I have just changed business and am in the process of resetting criteria I have set it low <100cfu/cm2 for TVC and based on the results we get and visual inspection as well as finished product testing I may alter them either way.
BTW I think that we get too caught up in numbers with hygiene and forget the basic question is my factory clean? If it looks clean and it smells clean there's a good chance it is clean. Use the swabs to narrow down where your issues are and give the senior management some numbers to prove you need more hygiene resource or not...
Swab tolerances
Microbiological surveillance
The following tolerances are to be used when assessing environmental swab results
Test
Tolerance
Pass
Caution
Fail
TVC
0 - 100
101 – 1000
> 1000
Pseudomonas
0 - 100
101 - 1000
> 1000
Enteros
< 10
10 – 100
> 100
(Hands) S. Aureus
< 10
10 – 100
> 100
(Hands) E.Coli
< 10
10 - 100
> 100
Overall average swab pass rate is 95%. Action should be taken when pass rates drop below 95% over a 4 week cycle.
Is this the sort of thing you are after?
The units were cfu/cm2
In my experience I haven't been able to find any text which tells you what you should be looking for in terms of standard results the above was an example from a protein factory which time and experience had validated. I've only ever had an issue from an auditor when the tolerances were too high then they wanted to know how they could be justified. If the tolerances are reasonable for the business you are in and the type of product you are producing then they will accept them. That said I have just changed business and am in the process of resetting criteria I have set it low <100cfu/cm2 for TVC and based on the results we get and visual inspection as well as finished product testing I may alter them either way.
BTW I think that we get too caught up in numbers with hygiene and forget the basic question is my factory clean? If it looks clean and it smells clean there's a good chance it is clean. Use the swabs to narrow down where your issues are and give the senior management some numbers to prove you need more hygiene resource or not...
I can understand what you are implying but IME a fail would need investigating and corrective action rather than relying on a less than 95% average.
I agree that you can get hung up on numbers but let's just say hand swabs of > 100 are very serious for high risk operations such as where an operator is handling a product.
I would also expect to see testing for Y&M.
Kind regards,
Tony
Hi - Yes I can see I should have omitted that line originally because I investigate every failure with a corrective action and escalate to senior management if it is below 95% over a running average because at that point there is usually something more serious wrong. I've never done environmental swabs for Y&M its not relevant for my product base so I think you do have to base it on what you are producing and the type of product ie RTE, RTC frozen, ambient. Maybe that's why there is no definitive standard. :)
This topic is helpful. But, could please someone provide specific references for hand swab standards?
Thank you!