Author Topic: How to remove beer stone in corny keg?  (Read 599 times)

Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #15 on: November 20, 2021, 01:06:50 am »
Realized I have some B-Brite. B-Brite is supposed to clean beerstone. I'm hoping it will work as advertised to clean the beerstone from my corny kegs.

Offline narcout

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Re: How to remove beer stone in corny keg?
« Reply #16 on: November 20, 2021, 04:07:30 pm »
I think Bar Keepers Friend works, and it's generally available in large grocery stores.
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Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #17 on: November 20, 2021, 07:33:57 pm »
If I was able to reach the bottom of the corny keg I'd give Bar Keeper's Friend a try. However, hand/arm will not go into keg far enough.

I didn't have much B-Brite (in the white/orange container) so I ordered some B-Brite from Northern Brewer as I had a 15% off code.

Offline ynotbrusum

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Re: How to remove beer stone in corny keg?
« Reply #18 on: November 21, 2021, 03:04:17 pm »
I bought a long handled brush for this very purpose.  It has become my favorite brush to use, even when a long handle is not needed.
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Offline goose

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Re: How to remove beer stone in corny keg?
« Reply #19 on: November 21, 2021, 03:56:43 pm »
I think Bar Keepers Friend works, and it's generally available in large grocery stores.

The only thing about Barkeepers Friend is that it is a bit abrasive.  I don't use it in kegs or my fermenters because to the possibility of scratching the stainless steel.
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Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #20 on: November 22, 2021, 04:17:28 pm »
I see Star San contains phosphoric acid. I wonder if Star San is able to remove beer stone?

In the same idea, I wonder if a soda will remove beer stone since colas contain phosphoric acid.

Offline Richard

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Re: How to remove beer stone in corny keg?
« Reply #21 on: November 22, 2021, 04:34:56 pm »
I see Star San contains phosphoric acid. I wonder if Star San is able to remove beer stone?

In the same idea, I wonder if a soda will remove beer stone since colas contain phosphoric acid.

Yes, as Goose mentioned above. You need to make it extra strong, though, 1 oz/gallon. It may be more expensive than milkstone remover when measured by the gallon, but I can get StarSan from 3 miles away, while the nearest farm supply store is at least an hour's drive. That makes StarSan cheaper to me overall. I tried it last week and it did a great job.
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Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #22 on: November 22, 2021, 08:49:08 pm »
I missed the reply about Star San. OK. Thanks. Definately, one for me to keep in mind.

Offline Saccharomyces

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Re: How to remove beer stone in corny keg?
« Reply #23 on: November 26, 2021, 05:25:38 pm »
Any solution with a pH of 3.0 or lower will dissolve beer stone.  Beer stone is calcium oxalate (the same compound as a kidney stone).  The pH of double-strength Star San will get one there, but there are cheaper ways to dissolve beer stone.  The pH of straight white vinegar is 2.5.  A gallon is less than $3.00.  Like, Star San, it can be sprayed onto a surface.  The downside is the aroma.

Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #24 on: November 26, 2021, 07:53:54 pm »
Perhaps, a good wash with PBW after using white vinegar?

I know white vinegar mixed with baking soda creates a bubbling cleaner.

Are these (white vinegar and baking soda) OK for use with stainless?

Offline hopfenundmalz

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Re: How to remove beer stone in corny keg?
« Reply #25 on: November 29, 2021, 09:01:38 pm »
Any solution with a pH of 3.0 or lower will dissolve beer stone.  Beer stone is calcium oxalate (the same compound as a kidney stone).  The pH of double-strength Star San will get one there, but there are cheaper ways to dissolve beer stone.  The pH of straight white vinegar is 2.5.  A gallon is less than $3.00.  Like, Star San, it can be sprayed onto a surface.  The downside is the aroma.

Judged with John Blochmann a few times. Asked about his recommendation for removing beer stone. He said white vinegar was his go to.
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Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #26 on: Today at 09:20:32 am »
Recommended mix of white vinegar to water to remove beer stone?

And then second question, how to remove the vinegar smell from the corny keg?
« Last Edit: Today at 06:24:46 pm by brewthru »