Why do all domestic eggs have black spots? I always suspect some unknown heavy metal content.

While the traditional way of making loose eggs would have heavy metals, that content would not change the appearance of the eggs so significantly, heavy metals are a kind of chronic poisoning, not so much that you can directly observe it with the naked eye.

Skinned eggs are generally unacceptable abroad, so even the occasional skinned egg from abroad is made in China, indicating a lack of understanding of the "domestic" part of the title.

One of the ways to make skin eggs is to wrap them in a light alkaline chemical mixture of lime clay and rice bran, which serves to separate each egg. According to the "Chinese people's *** and national agricultural standards - NY 5143-2002 - pollution-free food eggs" on the lead content of the provisions of the lead content of ≤ 2.0mg / kg (traditional process production) or ≤ 0.5mg / kg (other process production) is qualified.

See, qualified eggs, or even unqualified tens of times over the limit of the heavy metals contained in the eggs are very few, producing black spots and heavy metal infiltration into the eggs have little to do.

Black spots are likely to be outside the paste of mud and other things lead to

In addition, qualified products containing heavy metals is ultimately the amount of extremely small amounts, and even unqualified, heavy metal exceeded those as long as not often eat will not have an impact on people, in the final analysis, leaving the dose of talking about toxicity is a rogue ......