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Detection of oil residues on surfaces by swab or fluorescence?

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    Food Safety Consultant, Production Supervisor

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Posted 23 February 2017 - 06:49 PM

Hello everyone,


I'm looking for a way to evaluate whether a surface or packaging material might have oil residues. The food grade oil on our packaging equipment fluoresces, so I can look for large spills that way, but I'd like to be able to swab a surface or a PET preform and confirm that it is free from oil residues. Is there anything like that out there technology-wise? Looking to detect trace amounts beyond "it's oily to the touch".

Austin Bouck
Owner/Consultant at Fur, Farm, and Fork.
Consulting for companies needing effective, lean food safety systems and solutions.

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Posted 09 March 2017 - 04:00 PM

ATP swabbing should be sufficient, if you are speaking of animal or plant-based oils, assuming they contain protein(s).  Perhaps establish a baseline positive control first by swabbing an area you know is coated in the oil, to ensure that the oil will be detected by your ATP swab system?

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Posted 28 March 2017 - 09:40 PM

I'm curious about this too. What food grade oil do you use? We use petrogel, and ATP testing does not pick it up.

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