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Old 10-15-2007, 04:20 PM   #1
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Default Star San stain

I used to fill my stainless kithen sink with star-san solution during brew day. I now have a sink in the garage, which is much better.

The problem... the drain body is now discolored to a dull mettallic matte look. My SWMBO is not too happy as we just finished a kitchen remodel.

Star-san is an acid, so I am pretty sure this caused it. I am thinking of trying baking soda to try to restore the finish. Any help out there?

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Old 10-15-2007, 04:40 PM   #2
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star-san is safe for use on SS. I've not seen any discoloration in my kitchen sink, drain, or my corny kegs.

*shrugs*

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Old 10-15-2007, 05:22 PM   #3
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If it's diluted to the right level then it should not be corrosive to stainless steel. At least not for that short of a contact time. My guess it's something else that did it. Or you are using to much and not enough water so the PH is wrong. In that case it's not a very good sanitizer and you need to mix it right.

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Old 10-15-2007, 05:49 PM   #4
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You can try Bar Keeper's Friend. It that doesn't restore the shine, nothing will

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Old 10-15-2007, 05:59 PM   #5
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I had my bottle of Star San out on the counter and the 6 year old came up and squoze it. Now there is a little ring on the counter that looks like it was burned in and won't wash off. So it clearly has corrosive properties though everything that I have had that was in brief contact with it has been fine.

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Old 10-15-2007, 07:15 PM   #6
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Quote:
Originally Posted by Fish
I had my bottle of Star San out on the counter and the 6 year old came up and squoze it. Now there is a little ring on the counter that looks like it was burned in and won't wash off. So it clearly has corrosive properties though everything that I have had that was in brief contact with it has been fine.
Right that's why you mix it with a set amount of water. Right out of the bottle that stuff is nasty.
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Old 10-15-2007, 08:45 PM   #7
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Yeah, I was a little sloppy. I probably did 3-4 gal per oz. just to be sure. Also, my drain body is probably a low level SS as there is no discoloring with my SS sink.

Guess I'll get tighter on the measuring.

I also use a spray bottle with distilled water. I thought I read here this should be a stronger solution of star-san to water, right? Or should it be mixed the same ratio (1 oz/5 gal)?

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Old 10-15-2007, 09:49 PM   #8
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Quote:
Originally Posted by gonzo brewer
Yeah, I was a little sloppy. I probably did 3-4 gal per oz. just to be sure. Also, my drain body is probably a low level SS as there is no discoloring with my SS sink.

Guess I'll get tighter on the measuring.

I also use a spray bottle with distilled water. I thought I read here this should be a stronger solution of star-san to water, right? Or should it be mixed the same ratio (1 oz/5 gal)?
It's the same.
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Old 10-15-2007, 10:21 PM   #9
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yep, same ratio. yes, star-san is corrosive, its an ACID sanitizer. pH of 4.1 when mixed to solution...so I can only imagine what the undiluted pH might be.

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Old 10-16-2007, 07:48 AM   #10
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Quote:
Originally Posted by Fish
I had my bottle of Star San out on the counter and the 6 year old came up and squoze it. Now there is a little ring on the counter that looks like it was burned in and won't wash off. So it clearly has corrosive properties though everything that I have had that was in brief contact with it has been fine.
Heh......."squoze"
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