Has any work been done in the area of ACPs and the residual allergen level in the retail unit after using reasonable due diligence. Lets say I am doing the best I can to avoid unintended addition of allergens and feel that before I conclude I need to use a "may contain" statement I need to first see if levels are high enough to merit adding a given allergen to the contains list rather than defaulting to may contain.
Thanks for your collective input.