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Old 03-19-2008, 01:38 PM   #1
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Default Do campden tablets de-chlorinate water

I have read conflicting reports about the use of campden tablets (aka potassium metabisulfite) to de-chlorinate water. Some sites say filter your water with a charcoal filter to remove the chlorine then add Campden tablets to remove Chloramines. I have also read that campden tablets remove both chlorine and chloramines. Does anyone have any type of report on this subject or some knowledge in regards to the effectiveness of removing chlorine with campden tablets?


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Old 03-19-2008, 01:40 PM   #2
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Originally Posted by King of Cascade
I have read conflicting reports about the use of campden tablets (aka potassium metabisulfite) to de-chlorinate water. Some sites say filter your water with a charcoal filter to remove the chlorine then add Campden tablets to remove Chloramines. I have also read that campden tablets remove both chlorine and chloramines. Does anyone have any type of report on this subject or some knowledge in regards to the effectiveness of removing chlorine with campden tablets?
carbon filtering removes both chlorine and chloramines. Campden tablets remove both as well. Boiling alone, will remove chlorine (since it's fairly unstable) but not chloramines.


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Old 03-19-2008, 01:58 PM   #3
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Some sites say filter your water with a charcoal filter to remove the chlorine then add Campden tablets to remove Chloramines. ?
Activated charcoal (aka: activated carbon) filters are not all created equally and not designed to do the same jobs. Some are whole house filters, shower filters and drinking water filters. The drinking water filters usually do a better job. The amount of both chlorine and chloramine removed or reduced varies widely. If you are considering a filter carefully read the manufactors specs to see the various levels of reduction you are getting from each filter.
Carbon filters remove chemicals such as chlorine and chloramine by absorbing them into the carbon medium. Adding another chemical such as campden tablets changes the chemical make up of chlorine and chloramine, such as changing chloramine into sulfites.

Denny claims that boiling drives the sulfites off. I don't know, he's probably correct. But I personally want to remove chemicals from my water not add more!
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Old 03-19-2008, 02:09 PM   #4
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Does a carbon snake do well in cleaning up water?
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Old 03-19-2008, 07:19 PM   #5
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http://www.byo.com/mrwizard/1211.html
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Old 03-19-2008, 08:41 PM   #6
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Nice link brewhead that answers my questions. Thanks
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Old 03-19-2008, 10:17 PM   #7
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it's not how much you know - it's if you know where to find it
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Old 03-20-2008, 01:27 AM   #8
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so if you use campden to dechorinate wouldnt that kill the yeast??
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Old 03-20-2008, 11:46 PM   #9
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so if you use campden to dechorinate wouldnt that kill the yeast??
no no no no only because my post needs 10 characters or more
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Old 03-21-2008, 12:46 PM   #10
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is there a difference between sodium and potassium metabisulfite?


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