Thanks Randy! I was hoping you wouldn't say something like that. If it's used as a stabilizer then even high end brands might use it. Do you think if the tubing is left to soak for a couple weeks in water that would eliminate the tin?Just to be clear, I do not think tin is used as a plasticizer or softener of plastic, I think it stabilizes the plastic against degradation.
I also do not think it is something done only for cheaper products.
That said, I do not know what tubing and plastics manufacturers use which products.