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Old 04-04-2013, 11:18 PM   #1
Feb 2011
St-Alexandre, Quebec
Posts: 1

Hi keg for years, and this problem is growing : I having a scale or "beer stone" problem in my kegs. washing with PSB, TSP, Caustic (2,5%) , soap, or lime removal doesn't seem to remove my white deposit. Any idea ?

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Old 04-05-2013, 01:02 AM   #2
May 2011
Stow, MA
Posts: 17,841
Liked 3076 Times on 2302 Posts

I've never had beer stone appear "white". My guess is a mineral buildup, possibly the result of hard water.

The one thing apparently not tried is something acidic. Try mixing up a white vinegar & water solution, maybe a cup of vinegar in a quart of water (or a strong Star San solution - doubled, just for grins) pour it in, give it a good swirl, let it sit for awhile, repeat a couple of times, then dump into the next keg and rinse out the first, and see how it looks...


[edit] I just noticed the "lime removal" part. I assume that was something acidic (CLR, perhaps). If that's true, I'm not sure what you're looking at...

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Old 04-05-2013, 01:15 AM   #3
Mar 2011
somerset, NJ
Posts: 1,378
Liked 44 Times on 34 Posts

Good long soak in starsan gets rid of white stuff in my bottles, carboys, etc.

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Old 04-05-2013, 01:51 AM   #4
72Chevelle's Avatar
Feb 2013
Mooresville, North Carolina
Posts: 84
Liked 10 Times on 6 Posts

this article on byo said use foaming acid cleaner by spartan chemicals but i couldn't find it anywhere online. But it looks like acid is the way to go.

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Old 04-05-2013, 02:42 AM   #5
Nov 2010
Mahopac, NY
Posts: 2,221
Liked 61 Times on 52 Posts

Most kegs look nice and shiny inside when you get them, from the acidic soda syrup that used to be inside. So it's most likely beerstone. I use saniclean, about 3oz for 5 gal should clean it up. If it's real bad just attach a scotchbrite pad to a stick and scrub it manually with BKF. That will get rid of it very easily.
Originally Posted by Bobby_M View Post
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Old 04-05-2013, 02:50 AM   #6
Pratzie's Avatar
Sep 2012
Northeastern Pennsylvania
Posts: 1,621
Liked 173 Times on 121 Posts

Heated white vinegar can be used to remove hard deposits from things. Maybe give that a go. I believe it has to be pretty warm though, almost boiling
Bottled: Nothing :(
Kegged: Nothing :(
Primary: Empty
Secondary: Empty
On Deck: Cider

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Old 04-05-2013, 02:57 AM   #7
Oct 2012
Posts: 1,084
Liked 157 Times on 132 Posts

Have you tried oxiclean free? That stuff works like a charm!

Edit... nevermind! PBW is basically the same thing. Try the vinegar route
And on the eighth day he said "Make beer!"

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