You are reading a single comment by @mespilus and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@mespilus
I think we are still in the C6 vs C8 period:
https://echa.europa.eu/hot-topics/perfluoroalkyl-chemicals-pfas