Skip to main content
Contact Us
FOOD SAFETY · STANDARDS

What Are 3-A Sanitary Standards?

3-A Sanitary Standards are US design standards for equipment used in dairy, food and beverage processing, published by 3-A Sanitary Standards, Inc. They set requirements for materials, surface finishes and construction so equipment can be cleaned and sanitized properly. Equipment that passes third-party verification can carry the 3-A Symbol.

01

The Short Answer

3-A standards grew out of the dairy industry, where equipment must be cleaned thoroughly and often. Today they cover a wide range of food and beverage equipment. The 3-A Symbol shows an independent evaluator has confirmed the design meets the relevant standard, which helps buyers and inspectors.

  • //
    Materials Corrosion-resistant metals and food-safe plastics and seals.
  • //
    Surface finish Smooth finishes that do not trap residue.
  • //
    Construction Joints, welds and fasteners designed to be cleanable.
  • //
    Cleaning and inspection Access for cleaning, draining and checking surfaces.
02

Why It Matters

Our EHEDG FAQ covers the European approach, and our hygienic design guide and food grade stainless steel FAQ explain how it applies to HMIs. See the food and beverage HMI case study.