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Re: [APD] Can one just give up? - safe plastics
Does that come back to the PE / PP issue, with (I believe) Polyethylene
being approved for containers used for human consumption and Polypropylene
being not. You should only use PE buckets for any longer than short term
storage of water from your aquarium.
(I usually turn a bucket upside down and check for PE or PET being written
on the bottom.)
I'm not aware of any health issues with polypropylene containers. I usually
see polyethylene used, but that's most likely due to PE being a cheaper
material. Most plastic resins are stable and don't pose any health
problems, but the additives used for things like flexibility (plasticizers)
and UV stabilization sometimes do.
The red issue I think is due to the pigment used since (from my plastics
catalogs) the red version of many containers will be specifically mentioned
as NOT being FDA approved while the other colors all are for a given item.
That's pretty common, and since all the colors are molded from the same
resin and only different pigments are used, I think the pigment is the
problem. I've seen FDA approved red containers, but if you can't be sure
it's easier to just err on the side of caution and not use the red
containers for livestock.
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