What We Stand For

• Controlled Housing Conditions – Independent audits verify compliance with the KAT requirements.
• Recognised Standards – Ensure transparent and comparable quality standards throughout the EU.
• Transparent Origin – Every egg can be traced back to the hatchery.

Further information on the KAT goals and responsibilities can be found on the following pages.

With the stamp on the egg, the KAT e.V. Association for Controlled Alternative Animal Husbandry created the first traceability system in the food industry.

Enter the stamp on your egg and find out its origin:

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  Learn more about the print code

  The marking consists of three components:

  • Housing system

  • Country of origin

  • Producer code

  Example: 1-DE-1234501

  1. Housing system

  The first digit indicates the housing system of the laying hens:

  • 0 – Organic production
  • 1 – Free-range production
  • 2 – Barn production

  2. Country of origin

  The letter combination indicates the country of origin:

  • AT – Austria
  • BE – Belgium
  • BG – Bulgaria
  • DE – Germany
  • DK – Denmark
  • ES – Spain
  • FR – France
  • HR – Croatia
  • IT – Italy
  • NL – Netherlands
  • PL – Poland
  • RO – Romania
  • SE – Sweden
  • SI – Slovenia

  3. Producer code

  The producer code follows the country code. The last digit identifies the barn.

  For eggs produced in Germany, the first two digits of the producer code also indicate the federal state:

  • 01 – Schleswig-Holstein
  • 02 – Hamburg
  • 03 – Lower Saxony
  • 04 – Bremen
  • 05 – North Rhine-Westphalia
  • 06 – Hesse
  • 07 – Rhineland-Palatinate
  • 08 – Baden-Württemberg
  • 09 – Bavaria
  • 10 – Saarland
  • 11 – Berlin
  • 12 – Brandenburg
  • 13 – Mecklenburg-Western Pomerania