Is it brass?

[ramgeva]

Hi
I just got my post back after installing heating elements, and I noticed that there are yellow metal inside, I asked the person who install it if it is brass but he said no and it is silver??? Yellow?? Maybe I heated him wrong, anyway I attached a picture please tell me what you think and what ca I do to test if it is brass.
10x
BTW
is there any lab I can send a sample of my finished beer (before fermentation) ? to test for hazards metal and other nasty stuff that can leak from my gear to check that my gear is ok.


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[Weezy]

I'd want to guess it's brass. If they're standard sized nuts, you could look for SS replacements.

Here's some info on Brass in brewing equipment.
http://www.howtobrew.com/appendices/appendixB.html

 

[ramgeva]

Thanks I already read this article, the issue is that it is welded any I can't take it a part to clean, is there a way to check it? I read that brass is slightly magnetic so I tested with earth magnets and it isn't magnetic, what else can I do?
Also regarding the lab question is there such lab that perform such tests?
10x


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[Weezy]

There should be an environmental analytical lab in your area. They can test for metals in an aqueous sample. They'll give you a sample container too. You'll want to use distilled water, not beer, to give clearer results. Just adjust the water pH to 4 or so then cook it in the pot, maybe let it sit for a day as well to give it the opportunity to leach metals.

 

[ramgeva]

Ok 10x will check it


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