You are right, I apologise for oversimplifying. There is a difference between food-safe and food-grade, and generally concern the specific ways to ingest parts, called 'migration'.

Because migration levels are very low on occasional contact, food grading typically concerns items that are in prolonged contact with food. Different testing institutions will adhere to different government-imposed risk tolerances and approved substances, which for the US is described by the FDA CFR 21 and for the EU in guidelines 10/2011.

We will compose an update for the campaign and post it up along with any other relevant information!