I was working for a hydration company that made CamelBak like products. You can use TPUs they are anti-microbial without any additives. Also silicone are anti-microbial to. Both of these plastic are very expensive but they meet the requirement.
I was working for a hydration company that made CamelBak like products. You can use TPUs they are anti-microbial without any additives. Also silicone are anti-microbial to. Both of these plastic are very expensive but they meet the requirement.