美国好像有个关于金属使用限制的一个
4-101.14 Copper, Use Limitation.
(A) Except as specified in ¶ (B) of this section, copper and copper alloys such as brass may not be used in contact with a food that has a pH below 6 such as vinegar, fruit juice, or wine or for a fitting or tubing installed between a backflow prevention device and a carbonator. P
(B) Copper and copper alloys may be used in contact with beer brewing ingredients that have a pH below 6 in the prefermentation and fermentation steps of a beer brewing operation such as a brewpub or microbrewery.

请问有原文出处吗？谢谢~

应助达人

GB 4806.9出台，可以参考

DGCCRF2004-64, 受教了。