Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > Brew Science > Campden Tablets - what salts will they add?
Reply
 
LinkBack Thread Tools
Old 09-10-2012, 09:08 PM   #1
ArcLight
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2011
Location: Millburn, NJ
Posts: 951
Liked 44 Times on 38 Posts
Likes Given: 48

Default Campden Tablets - what salts will they add?

In addition to removing Chlorine/chloramine, will the Campden tablets add various salts that must be reflected in a spreadsheet/application such as BrunWater or EZ Water? (ex: X mg of salt S, and Y mg of salt T)


Or will 1/2 of a tablet for 7-8 gallons have negligible amounts of salts?

__________________
ArcLight is offline
 
Reply With Quote Quick reply to this message
Old 09-10-2012, 09:18 PM   #2
aiptasia
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2011
Location: Them Scary Woods, FL
Posts: 3,519
Liked 531 Times on 469 Posts
Likes Given: 162

Default

Negligible. Worry not. Wiki: http://en.wikipedia.org/wiki/Campden_tablets

__________________
Paranormal Brewing
Beer so good, it's frightening.

2014: Seven Heavens Series One: Vilon, Mystic Melomel, Skeeter Pee.
aiptasia is offline
 
Reply With Quote Quick reply to this message
Old 09-10-2012, 09:29 PM   #3
mabrungard
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Carmel, IN
Posts: 2,768
Liked 192 Times on 165 Posts
Likes Given: 24

Default

Scroll down to section 4.1.3 to see a discussion on metabisulfite use for dechlorination at the following page:

https://sites.google.com/site/brunwater/water-knowledge

__________________

Martin B
Carmel, IN
BJCP National
Foam Blowers of Indiana (FBI)

Brewing Water Information at:
https://sites.google.com/site/brunwater/

Like Bru'n Water on Facebook for occasional discussions on brewing water and Bru'n Water

mabrungard is offline
 
Reply With Quote Quick reply to this message
Old 09-10-2012, 09:52 PM   #4
rhamilton
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: Austin, Texas
Posts: 1,257
Liked 64 Times on 53 Posts
Likes Given: 1

Default

Quote:
Originally Posted by mabrungard View Post
https://sites.google.com/site/brunwater/water-knowledge

4.1.3 Metabisulfite (Campden Tablet) addition is effective for chlorine and chloramine removal. The tablets are either potassium metabisulfite or sodium metabisulfite. Both are effective in disinfectant removal. When sodium content in the brewing water is a concern, potassium metabisulfite may be preferred. Moderate potassium content in brewing water generally has little effect on brewing performance or taste. Adding these compounds at a rate of about 9 milligrams per liter (~35 milligrams per gallon or ~1 tablet per 20 gallons) or (~1 tablet per 75 liters) will dechlorinate typical municipal water and leave residual concentrations of about 3 ppm potassium or 2 ppm sodium (depending on the chemical used) and 8 ppm sulfate and 3 ppm chloride. These ion contributions are relatively insignificant and can be ignored in practice.
So if you are using 1/4 tablet for 5 gallons, add:

3 ppm Potassium or 2 ppm Sodium, depending on the variety, and...
8 ppm sulfate & 3 ppm chloride

Not significant by any means but I'm a stickler for detail
__________________
On Deck: Cornucopia Oktoberfest
Primary: Centennial Blonde v2, Ed Wort's Kolsch
Secondary: none
Kegged: County Jail Pale Ale, AHS Anniv IPA, AHS Brooklyn Brown, Raspberry Wheat, Blood Orange Hefe, Ranger IPA clone (x2), Newcastle clone, AHS Irish Red, Centennial Blonde
Bottled: Session Series Belgian Saison, Apocalypso, Pecan Porter, DFH 90 Minute Clone, Apfelwein (x2), Wytchmaker Rye IPA Clone, Vienna/Simcoe SMaSH, Munich/Cascade SMaSH
rhamilton is offline
 
Reply With Quote Quick reply to this message
Old 09-11-2012, 01:04 AM   #5
ArcLight
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2011
Location: Millburn, NJ
Posts: 951
Liked 44 Times on 38 Posts
Likes Given: 48

Default

Thank you Martin.

>>So if you are using 1/4 tablet for 5 gallons, add:

But total water, taking into account boil off, and losses (grain, trub, hops), is closer to 7.5/8, so you need 1/3 of a tablet, or even half a tablet.

__________________
ArcLight is offline
 
Reply With Quote Quick reply to this message
Old 09-11-2012, 01:59 PM   #6
ajdelange
Senior Member
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: McLean/Ogden, Virginia/Quebec
Posts: 6,139
Liked 615 Times on 508 Posts
Likes Given: 19

Default

The one tablet per 20 gallons dose was based on

1. Campden tablets that weigh 692 mg
2. Campden tables made of 100 percent potassium metabisulfite
3. Water chlorine equivalent of 3 mg/L all as chloramine.

The amount of bisulfite required depends on the relative mix of chlorine and chloramine. After standing over night there should be no chlorine, the total chlorine should be reduced and, as water authoirites seldom go to the extent of as much as 3 mg/L, the demand for bisulfite should be less.

Fortunately there is a simple test for chloramine: if you can smell it there's enough of it to be of concern. Therefore, I recommend crushing a Campden tablet and dissolving it in some warm water (this can be difficult - it doesn't all have to be dissolved though). Pour a little of the liquid into the water being treated. Now stir and smell the water. You have added just the right amount when the chlorine smell is gone. If you have added too much the water will now smell of sulfur dioxide. This is not a problem. It will do good things for your beer (some people add metabite in the kettle).

In the 3 mg/L chloramine case the treatment will result in 7.1 mg/L sulfate, 1.5 mg/L ammonium (yeast nutrient) and 3 mg/L chloride plus 3.3 mg/L potassium or 1.8 mg/L sodium depending on whether the K or Na salt was used. Also, a little free goodie, 5.2 ppm as CaCO3 alkalinity is neutralized.

All the details can be found in a .pdf at hbd.org/ajdelange. Look for the Chlorine - Chloramine article. The numbers come from Table 5.

__________________
ajdelange is offline
 
Reply With Quote Quick reply to this message
Old 09-11-2012, 02:25 PM   #7
ArcLight
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2011
Location: Millburn, NJ
Posts: 951
Liked 44 Times on 38 Posts
Likes Given: 48

Default

Thank you AJ.
Thanks for the link too!

In my area of NJ, Chloramine is 0.6 - 1.1, which is well below 3.0.
(Chlorine is .56)

So I think a 550MG tablet (thats the size from the Home Brew Shops) will handle more than 20 gallons, so 1/3 of a tablet for 7.5 gallons seems about right.

__________________
ArcLight is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
partial Campden tablets to remove chloramine ? joeybeer Brew Science 3 12-26-2011 06:32 AM
Infection and Campden tablets? benbradford Brew Science 1 08-22-2011 07:18 PM
Campden Tablets and Sulfites Gavagai Brew Science 4 01-03-2011 01:20 PM
Campden tablets Quantity? Graeme Brew Science 9 04-19-2010 10:56 PM
Campden Tablets after Fermentation? brew hoperator Brew Science 7 03-10-2010 01:54 PM