How are commercial chicken eggs so consistently produced?

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I got a bunch of farm fresh eggs and they are all over the place, including ones that would be too small to sell in stores. Also there are a good amount of double yolk eggs too. Do commercial egg companies throw out a lot of eggs and screen for double yolk eggs?

In: Biology

Commercial eggs are sorted by egg and quality into “grades”. Different grades and sizes can be purchased at the store.

Lower graded eggs are mainly lower grades because of appearance, so these can be sold to commercial food producers who (rightfully) don’t care what the egg looks like.

They get sorted and graded.

Your higher grade eggs end up on the shelves, your lower grade eggs end up as liquid egg beaters or as ingredients for food production.