> Teflon will take quite a bit of heat but one has more than one type to deal
Good post. I forget the OP's Q. Something about a fish tank application?
PVC tubing (Tygon or other brand name) does come in many grades, including
"food grade" made from non-toxic ingredients conforming to FDA and 3A
standards. Of course, coca-cola passing through such tubing has shorter
contact times compared to fish swimming around next to it.
There are many other "food grade" (FDA approved) kinds of tubing and pipe
that might be suitable to the fish tank purpose.
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[Only registered users see links. ] (Kent Breathe) wrote in message news:<[Only registered users see links. ]>...
The water that most folks use in their home aquariums passes thru
copper plumbing. There is a common cure for certain fish diseases that
I recall from my days in the hobby that was common ol cupric sulfate.
Actually I believe that it is the cuprous form that is toxic to fish.
At the company I work for we sell a test system specifically for
testing for cuprous ion in aquarium water.