Author Topic: How to remove beer stone in corny keg?  (Read 1293 times)

Offline brewthru

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How to remove beer stone in corny keg?
« on: November 14, 2021, 10:15:58 am »
I clean my kegs after every use. This includes the posts, tubes, poppets, etc.

First time I've noticed beer stone in 2 of the kegs.

I tried removing the beer stone using 2 tsp PBW in 1/3 keg of hot water. I shook the keg hoping to move around the PBW.

Unfortunately, kegs still have the beer stone at the bottom and on the sides.

Any ideas/recommendations for removing beer stone in corny kegs?

Offline narvin

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Re: How to remove beer stone in corny keg?
« Reply #4 on: November 14, 2021, 02:36:08 pm »
Pretty cheap and easy:

https://www.walmart.com/ip/Gal-Milkstone-Remover-Pack-of-4/39088460?wmlspartner=wlpa&selectedSellerId=7452&adid=22222222222000000000&wmlspartner=wmtlabs&wl0=e&wl1=o&wl2=c&wl3=10352200394&wl4=pla-1103028060075&wl5=&wl6=&wl7=&wl10=Walmart&wl11=Online&wl12=39088460_10000007565&wl14=dairy%20milkstone%20remover&veh=sem&msclkid=90704c33977012fd12a32da2d896f00e&gclid=90704c33977012fd12a32da2d896f00e&gclsrc=3p.ds

I soak the keg in a half keg solution for a few days, invert the keg and repeat.  Beerstone comes gf easily.

PBW alone rarely works, since it isn’t acidic.
+1 …but you can get it a lot cheaper than Wally World: https://www.truevalue.com/sterosol-milkstone-remover-acid-rinse-1-gal


Good point I got my last gallon for about $12 - i didn’t even look at the prices the Waltons prior to posting- Fleet Farm was cheap and readily available at near 1/4 tithe price.


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Offline scrap iron

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Re: How to remove beer stone in corny keg?
« Reply #5 on: November 15, 2021, 05:27:28 am »
If you have star-san sanitizer on hand just mix up a double strength batch and soak them in that. I use this on my SS fermenter bucket too.  Beer stone needs acid to remove.
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Offline hopfenundmalz

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Re: How to remove beer stone in corny keg?
« Reply #6 on: November 15, 2021, 07:12:55 am »
If you have star-san sanitizer on hand just mix up a double strength batch and soak them in that. I use this on my SS fermenter bucket too.  Beer stone needs acid to remove.
Correct.

PBW is a base, so that is why it didn’t  work.
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Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #7 on: November 15, 2021, 06:01:52 pm »
Thanks for the input. I stopped at Ace Hardware this afternoon. Item wasn't in store. They were not able to order as delivery status was "ETA (blank)". Person working at Ace Hardware said this indicates "unknown" when available. Also, I would have had to order 4 bottles.

Ended up ordering from Walmart.
« Last Edit: November 16, 2021, 06:50:28 am by brewthru »

Offline goose

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Re: How to remove beer stone in corny keg?
« Reply #8 on: November 16, 2021, 08:39:16 am »
Another way to remove it that is cheaper than Star San is to get an acid cleaner that is used for dairy equipment from a farm supply store.  The one near my house that sells and services bulk milk tanks has a product that contains Nitric, Sulfuric, and Phosphoric acids.  I use about 15 ml of the stuff in 5 gallons and soak for about 15-20 minutes.  It cleans up my boil kettle and kegs quite nicely.  If you are sticking with Star San you will need about one ounce per gallon of water (this is what SS Brewtech recommended for their conical fermenters).

Remember though, you have to clean the keg with PBW, Craftmeister, or caustic before doing the acid soak to remove any organic soils.  The acid won't remove these, only the inorganic beer stone.
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Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #9 on: November 16, 2021, 11:01:20 am »
Well, that didn't work! A WARNING TO OTHERS!

I ordered the 4 1 gallon jugs of milkstone remover for $58.00 plus tax from Walmart.
https://www.walmart.com/ip/Gal-Milkstone-Remover-Pack-of-4/39088460

Didn't seem unreasonable at $14.50 per gallon. Yes, ACE has the better prices at $12.99 a gallon, but I was unable to find.

Then, on Tuesday, November 16, 2021 I receive an email from Magellan Distribution Corp telling me the website is wrong and I will only receive 1 bottle and NOT the 4 bottles for $58.00 that I ordered. THIS IS ILLEGAL and dishonest.

I immediately contact Walmart to let them know, once again, this is illegal and dishonest.

Order canceled, but now I'm looking again to find the milkstone remover.

BTW, I tried BLC in the corny kegs. Didn't remove the beerstone.


Offline narvin

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Re: How to remove beer stone in corny keg?
« Reply #10 on: November 16, 2021, 05:48:19 pm »
This isn't sold by Walmart directly, but through their third party marketplace.  I guess they're trying to compete with Amazon.

Anyone can report incorrect product information on that page.  So I did.

Offline EnkAMania

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Re: How to remove beer stone in corny keg?
« Reply #11 on: November 17, 2021, 03:52:29 pm »
I remember a poster who got a good price on milkstone remover via a farm supply store.
Some day we'll look back on this and it will all seem funny

Offline BrewBama

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Re: How to remove beer stone in corny keg?
« Reply #12 on: November 17, 2021, 05:36:22 pm »
I remember a poster who got a good price on milkstone remover via a farm supply store.
I got mine for $12 at Tractor Supply.


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Offline brewthru

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Re: How to remove beer stone in corny keg?
« Reply #13 on: November 18, 2021, 10:41:06 am »
Happen to have the Tractor Supply part number or url? I'm not finding when I check online.

I called my local TSC Store. They don't carry milk stone remover.
« Last Edit: November 18, 2021, 10:45:39 am by brewthru »

Offline BrewBama

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Re: How to remove beer stone in corny keg?
« Reply #14 on: November 18, 2021, 12:28:58 pm »
I tried looking it up on their website and get no results . I had to order it and pick it up at the local store. Not sure why they don’t list it anymore.



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