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3-A Sanitary Standards
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3-A is an equipment design standard with an authorization behind it. It is not a claim a supplier can simply make, which is precisely why processors specify it.
The 3-A Sanitary Standards cover the design and fabrication of equipment used with milk and milk products, and by extension a great deal of other food processing equipment. They are prescriptive about cleanability rather than performance.
What is covered. Materials permitted for product contact, surface finish, drainability, elimination of crevices and dead legs, joint construction, and the treatment of gaskets and seals.
Specify It Where It Belongs. 3-A on product-contact equipment in a dairy plant is normal and often mandatory. 3-A on a utility loop that never touches product adds cost without protection.
The distinction is worth making deliberately rather than applying the standard plant-wide by habit. We will quote either way, and we would rather ask.
Relationship to FDA and USDA. These are different things and get conflated constantly. FDA governs material acceptability including elastomers. USDA acceptance relates to equipment in meat and poultry establishments. A 3-A unit normally satisfies the FDA material question as a matter of course and does not automatically answer a USDA one.
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What 3-A Prescribes
3-A Sanitary Standards are prescriptive about cleanability rather than performance. They govern the materials permitted for product contact, the surface finish, drainability, the elimination of crevices and dead legs, joint construction and the treatment of gaskets and seals. Authorization sits behind the symbol, which is why processors specify it and why a supplier cannot simply claim it.
Product-Contact Surfaces
Drainability & Dead Legs
Where It Belongs
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