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Old 06-24-2010, 02:55 AM   #11
HatchetJack
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I just built my first mash tun last night with a braid. I robbed about
2 ft of #12 copper wire out of some scrap romex or home wire.
Then I coiled it tightly around an ink pen and streched it out like
a spring and inserted it inside the braid.

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Old 06-25-2010, 08:14 PM   #12
randomsample
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Originally Posted by JohnMc View Post
>

I'm sure it happens, this is two metals with some difference in dielectric constants, but I've never heard of a problem. At most, some metal ions would end up in the beer, then get sucked up by the yeast and tossed into the waste with them.
Never heard of it having any effect.
Does that happen? That would ease my worries about using my brass fittings (lead and such).
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Old 06-26-2010, 11:26 AM   #13
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Quote:
Does that happen? That would ease my worries about using my brass fittings (lead and such).
Yeast have a protein of a class called metalothioneins, theirs is from the gene called CUP1. Its highest affinity is for copper, but it'll bind other metals to some degree or another. It causes the metal to be sequestered away in the yeast. It's not perfect, but it'll get most of the heavier metals out of the wort.
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