# Why does the EU ban washing Class A eggs? > In the European Union, Class A eggs may not be washed or cleaned, before or after grading. The ban is in Article 4(1) of Delegated Regulation (EU) 2023/2465, which provides for an exception in paragraph 3. In practice, washing can remove the cuticle, the thin film that covers the shell. Updated: 2026-10-09 · URL: https://vigiovo.com/en/resources/why-the-eu-bans-washing-eggs · Português: https://vigiovo.com/recursos/por-que-a-ue-proibe-lavar-ovos.md ## Key takeaways - Article 4(1) of Delegated Regulation (EU) 2023/2465 bars washing or cleaning Class A eggs, before or after grading. - The ban has an exception in paragraph 3 of the same article, which this guide does not describe. - In practice, washing can remove the [cuticle](https://vigiovo.com/en/resources/glossary#cuticle), which helps explain the rule. - A dirty or cracked egg does not meet Class A, because the shell must be clean and undamaged (Article 3(1)(a)). - In Brazil, washing is a sanitising step with its own logic, not a class criterion. ## What does Article 4(1) say? Under Article 4(1) of Delegated Regulation (EU) 2023/2465, Class A eggs may not be washed or cleaned, before or after grading. The exact wording is: “Class A eggs shall not be washed or cleaned, before or after grading, except as provided for in paragraph 3.” The rule covers both actions, washing and cleaning, at any point in grading. A Class A egg cannot go through either one. The same article provides for an exception in paragraph 3. The part of the regulation used for this guide refers to that exception without reproducing it, so this guide does not describe it. Read the full regulation before applying the rule. ## Why can't Class A eggs be washed? The cited text does not explain why the ban exists. A practical explanation is the [cuticle](https://vigiovo.com/en/resources/glossary#cuticle): washing can remove it, and it is the thin film that covers the shell and helps seal its pores. For more, see [the eggshell cuticle](https://vigiovo.com/en/resources/eggshell-cuticle). In practice, a Class A egg has to arrive at grading clean, because it cannot be cleaned afterwards. A dirty egg does not meet Article 3(1)(a), which requires a shell that is clean and undamaged, and washing cannot move it into that class. ## Can dirty or cracked eggs be Class A? No. Article 3(1)(a) requires a shell of normal shape, clean and undamaged, so a dirty or cracked egg does not meet the Class A standard. Because Class A eggs cannot be washed, cleaning is not a route to that class either. The cited text does not set the destination of Class B eggs, nor of dirty or cracked eggs outside Class A. That part of the rules is outside this guide. For the full Class A characteristics, see [EU Class A and B eggs](https://vigiovo.com/en/resources/eu-class-a-and-b-eggs). ## How does this compare with washing in Brazil? In Brazil, washing plays a different role: it is a sanitising step, not a class criterion. It is mandatory in specific cases, mainly for dirty eggs going to industrial processing. The two rules therefore address different things. The EU bans washing Class A eggs. Brazil requires washing certain dirty eggs destined for processing. For the Brazilian side, see [washing eggs for industrial processing](https://vigiovo.com/en/resources/washing-eggs-for-processing) and the [side-by-side guide](https://vigiovo.com/en/resources/to-wash-or-not-to-wash-eggs). ## Does a camera help with this rule? Not directly. A camera does not wash eggs, and it does not measure the cuticle, so it cannot confirm whether an egg was washed. Vigiovo grades each egg as clean, dirty, cracked or unverified, and marks an egg as dirty when its stains add up to 3% or more of the visible area. That is a configuration value, calibrated on each line, not a legal criterion. See [how it works](https://vigiovo.com/en/how-it-works). A surface camera does not see inside the egg, where the air cell and the yolk are, and both are assessed for Class A. For those, [candling](https://vigiovo.com/en/resources/glossary#candling) is the method that sees the interior. ## Frequently asked questions ### Does the EU ban washing all eggs? No. The ban in Article 4(1) of Delegated Regulation (EU) 2023/2465 covers Class A eggs, before or after grading. The same article provides for an exception in paragraph 3, which this guide does not describe. The cited text does not cover the other classes. ### Can a dirty egg become Class A after washing? No. Class A requires a shell that is clean and undamaged (Article 3(1)(a)), and Class A eggs may not be washed or cleaned before or after grading (Article 4(1)). Washing does not make an egg Class A, because the rule prohibits exactly that step. ### Why must a Class A egg arrive clean at grading? Because it cannot be cleaned afterwards. The regulation bars cleaning or washing both before and after grading, so the shell has to be clean from the start. The cited text does not explain the reason. In practice, washing can remove the cuticle, the film that covers the shell. ## Sources - [Delegated Regulation (EU) 2023/2465, marketing standards for eggs](https://eur-lex.europa.eu/eli/reg_del/2023/2465/oj/eng), EUR-Lex ## Read next - [EU Class A and Class B eggs explained](https://vigiovo.com/en/resources/eu-class-a-and-b-eggs.md) (Guide, 2026-10-09): How Delegated Regulation (EU) 2023/2465 defines Class A and Class B eggs, when an egg is downgraded and what the 10-day marking deadline is. - [EU egg weight grades: XL, L, M and S](https://vigiovo.com/en/resources/eu-egg-weight-grades.md) (Guide, 2026-10-09): The weight limits for each EU egg grade (XL, L, M and S), how to grade an egg that sits exactly on a limit, and what weight does not decide. - [How to identify cracked eggs: types, methods and rules](https://vigiovo.com/en/resources/how-to-identify-cracked-eggs.md) (Guide, 2026-10-09): What a cracked egg (check) is, how it differs from a leaker, which methods detect each kind of crack and where cracked eggs must go under the regulations. ## How Vigiovo helps Vigiovo grades eggs on the conveyor as clean, dirty, cracked or unverified, in real time, with deterministic computer vision: every decision comes with the measurements behind it, on an ordinary CPU. https://vigiovo.com/en/how-it-works.md 4 min read.