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Old 11-09-2012, 12:13 AM   #1
hawkeyes
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Sep 2011
Quad Cities, IL
Posts: 244


I purchased some old used glass carboys. I have them soaking in oxiclean but can't seem to remove some smudges from inside the glass. No matter I much I scrub with the brush. Do you think these are OK to use?



 
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Old 11-09-2012, 12:24 AM   #2
revco
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Jan 2010
Missoula, Montana
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Hard to say without knowing what the gunk is. Let 'em sit for 24+ hours in a hot oxy-clean soak. If that doesn't clear 'em out, it's not likely anything will. I would personally be concerned just *what* could withstand a 24 hour oxy soak!

Also might try a brush on a drill, if the spots are accessible with a straight brush. You could try a more abrasive brush, but that could be counterproductive by creating scratches, or worse, weaken/break the carboy.



 
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Old 11-09-2012, 12:30 AM   #3
Gear101
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Nov 2010
USA
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You can get a Carboy Cleaner, I have the one that goes on the end of a drill, works like a charm.
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Old 11-09-2012, 01:00 AM   #4
runningfarmer
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Oct 2009
Davenport, iowa
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Try some CLR on it. Just use it straight out of the bottle and leave alone overnight. Then try brushing. Sometimes, it will need a second application. I've never had anything I couldn't get clean with CLR. Also, I made my own bottle cleaner out of Shamwow to clean the carboy. The procedures are in http://www.homebrewtalk.com/f51/buh-...-brush-286700/

 
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Old 11-09-2012, 01:13 AM   #5
hawkeyes
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Sep 2011
Quad Cities, IL
Posts: 244

Oxiclean didn't do it but vinegar seems to be doing the trick. I will keep the CLR in mind if the vinegar doesn't get it all. Thanks!

 
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Old 11-11-2012, 12:18 PM   #6
hawkeyes
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Sep 2011
Quad Cities, IL
Posts: 244

When the carboy dried, I can still see it. When it was applied with vinegar (not dry) it goes away. The vinegar did help but didn't remove it all. I am going to try bleach next since I have some. If the bleach doesn't work, I will get some CLR.

 
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Old 11-11-2012, 01:07 PM   #7
TNGabe
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Aug 2012
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Did you use hot water with the oxyclean? I'd say the bleach is a waste of time at this point.

 
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Old 11-12-2012, 02:59 AM   #8
Calder
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Mar 2010
Ohio
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Where are these marks?

Could it be hard water deposits, or beerstone.

CLR would be the thing to try.

 
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Old 11-12-2012, 12:17 PM   #9
chuckularone
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Sep 2011
Newark, DE
Posts: 20
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Does it look hazy, like chemical etching? You said they were old carboys, do you know what was in them before? If they were used in a lab, handling chemicals potent enough to etch the glass, you might not want to use them for brewing.

 
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Old 11-12-2012, 04:07 PM   #10
KBentley57
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Jun 2012
Birmingham, AL
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If you've done all of that to them at this point, do you really think whatever the stain is will leech into your beer? I would rinse it well, fill it to that point with water, wait a few days and taste it. If it tastes like water, it's probably fine, if you die, I'll admit I was wrong.



 
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