不該出現或完全可以避免的毒物更多，
比方說人工色素，根本是拿顏色騙自己，
完全可以不加

英國食品局的公告 採取2.5 PPM的下架標準
http://www.food.gov.uk/news/newsarc...08/sep/melamine

All products from China containing more than 15% milk as an ingredient, or products where the percentage of milk content cannot be established, will be subject to mentary, identity and physical checks, including
laboratory analysis, to determine that any levels of melamine present in the product do not exceed 2.5 mg/kg. Those products with more than 2.5mg/kg will be destroyed.