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Old 02-03-2010, 03:22 AM   #1
breadbohn
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Default star san - undiluted

Hi,

I've seen lots of discussion here about how long star san will keep, and I myself can use the same five-gallon batch for months without seeing the pH rise above 2.

However, when I mixed up a fresh batch tonight, the pH was up around 7-8. Has anybody else seen this? Is there something about how long you can keep the undiluted star san in its original bottle? I add that my original bottle was stored in a cool room, ~60-65F, and in the dark.

Any ideas are appreciated.

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Old 02-03-2010, 03:25 AM   #2
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I have not seen this. What is the Ph of the undiluted star san?

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Old 02-03-2010, 03:27 AM   #3
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outta the bottle 1.5 or something. its 2.8 when 1oz/5gal and distilled water lasts over 6 months at 2.8

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Old 02-03-2010, 03:37 AM   #4
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Quote:
Originally Posted by mordantly View Post
outta the bottle 1.5 or something. its 2.8 when 1oz/5gal and distilled water lasts over 6 months at 2.8
Yeah I meant his particular batch. To get a ph that high I would think it is above 3 to start with.

If that is the cas you might want to call the company and see about getting it replaced.

If the undiluted checks out in strength though then I would say there is a problem with the mixing.
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Secondary - Imperial Stout
Secondary - Pilsner
Secondary - Bourbon Stout
Secondary - Mead
Bottling - Pilsner
Bottling - Viking Sky
Bottling - Root beer
Drinking - Pucker Butt, Tomahawk, Thor's Hammer
Cellar - 2004 Clover Mead, 2009 Blackberry Mead, Blonde Biasa, Kaptin Kölsh

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Old 02-03-2010, 03:39 AM   #5
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Oops, looks like I just didn't stir the stuff enough. I figured it was petty churned up in the vigorous flow of water I added to it. But now, after stirring, it's fine.

Sorry to trouble you folks, but I panicked - tomorrow's brew day, and I won't be able to get to the LHBS. Anoher novice lesson learned!

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Old 02-03-2010, 03:41 AM   #6
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i use an arrowhead bottle. add acid to water like in chemistry. cap, and shake.

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