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Home Brew Forums > Home Brewing Beer > General Beer Discussion > HELP -- Wrong metal used to weigh down my dry hop bag in fermenter!
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Old 01-08-2013, 11:53 PM   #11
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If it's zinc, how is it worse than adding a zinc supplement for the yeast?


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Old 01-08-2013, 11:59 PM   #12
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Quote:
Originally Posted by seabass07 View Post
If it's zinc, how is it worse than adding a zinc supplement for the yeast?
It's probably not. Plus, with only 6 days of soak time, the chances of all that much being removed is minimal. I had the chrome ball in my keg for over a month.

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Old 01-09-2013, 12:02 AM   #13
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I myself would still drink the beer, a little zinc won't hurt you. Its in your vitamins as well.
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Old 01-09-2013, 12:04 AM   #14
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Just listened to an old episode of Brew Strong with jamil and John Palmer about this very topic. While zinc is not a good metal to use in brewing, short contact time will not produce enough zinc in solution to cause a problem. The toxic dose is quite high and yeast have quite an affinity for zinc and will usually absorb much more than your short contact would have released. The symptoms of heavy metal toxicity are flu like symptoms with no fever and sever stomach upset and vomiting. Unless you and your friend are puking I wouldn't sweat it. If your still not sure just rush that batch over to me and I will conduct some in depth testing for you. 😉
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Old 01-09-2013, 12:09 AM   #15
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I'm very very particular what I serve to other people. I wouldn't blame you a bit if you wanted to toss a product that has potential metal leaching in it. Everyone here is probably right, that it's no big deal...but I want you to know that at least one other interwebz brewer would be very concerned about relying on that advice.
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Old 01-09-2013, 12:29 AM   #16
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The screws i used may actually be better described as small and medium sized bolts. They are from a TV mounting kit, they are the ones that go into the back of the TV. Since I used quite a few small ones, there's probably more contact area and more leaching. Can anyone that knows metal speak to what kind of metal (or coating/plating) they use on those screws? I actually have used just about every mounting bracket for TVs on the market, and they definately all use the same looking screws.

After a few more tastes, it does definately taste like metal on the finish. I did force carb it by shaking it with the pressure set to about 25psi, then dropped it to 12psi and left it over night last night. I will wait to see if the flavor starts dropping out over time I guess.

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Old 01-09-2013, 12:36 AM   #17
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Regular non weather resistant screws and bolts are usually made out of steel.
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Old 01-09-2013, 12:36 AM   #18
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Especially with the force and rock method I've noticed a metallic tang in my beers, even with 30PSI for 36hrs I notice it. I've been doing my beers at 12psi over 2-3 weeks for the last 6 months, and I've not noticed it.
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Old 01-09-2013, 12:54 AM   #19
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In the future OP, goto a Dollar store and buy a bag of their glass decorative rock things that go into planters/vases...or just get some glass marbles.
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Old 01-09-2013, 12:58 AM   #20
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Ask yourself this:

Have I tasted this metallic flavor before when force carbing beer?
and given that answer...
Is it more likely force carbing giving me that metallic taste...or is it more likely the suspect metal that used in my dry hop bag?


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