The original post by jenmaw asked
" if there was a way to verify that the cleaning procedure on the equipment for cleaning an allergen containing product to ensure that no allergen residue is left?"
While we agree that allergens are proteins, and any protein residue on the surface will react to an ATP swab, therefore we can assume that if the swab reacts to protein it will, in the case of the Hygenia swab, turn purple.
So a purple result indicates a protein is on the surface, but which protein?
Back to jenmaw's question.
To determine if an allergen residue is left you will need to use a specific test designed to determine the actual protein present. Before everyone clicks on the reply button, please consider that some processes tolerate a background level of protein to be present, however they then test for specific allergen proteins. (usually purged or flushed processes)
So if it is a process hygiene outcome, ATP works well, if it is for a specific allergen then a test designed for that allergenic protein needs to be used. (single it out).
As mentioned before I use rapid (5 min result, detected/not detected) (jenmaw approx $20 AUD each rapid test) and validate using elisa micro well for the specific ppm of contaminant if detected.
amandas post is a combination of these methodologies.
Cosmo