The Great Bottle Opener Giveaway

Home Brew Forums > Home Brewing Beer > Brew Science > Water treatment question

Reply
 
LinkBack Thread Tools
Old 01-01-2013, 07:28 PM   #1
lewishowardm3
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2012
Posts: 238
Liked 13 Times on 10 Posts

Default Water treatment question

Hi all. I have just found my water supply figures and my alkalinity is 141 ppm does this seem too high? Also they only took one sample all year. I don't really know what to do

Please help!

__________________
lewishowardm3 is offline
 
Reply With Quote Quick reply to this message
Old 01-01-2013, 09:15 PM   #2
mabrungard
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Carmel, IN
Posts: 2,631
Liked 174 Times on 152 Posts
Likes Given: 24

Default

Its not too high if you are mashing a stout. But it will require neutralization under every other situation! So sparging water has to be acidified and the mashing water for all less acidic grists will need some too.

Visit the Water Knowledge page on the Bru'n Water website for more information on the need to control alkalinity.

__________________

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 01-01-2013, 09:40 PM   #3
lewishowardm3
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2012
Posts: 238
Liked 13 Times on 10 Posts

Default

Thanks ill check it out

__________________
lewishowardm3 is offline
 
Reply With Quote Quick reply to this message
Old 01-02-2013, 09:47 PM   #4
ajdelange
Senior Member
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: McLean/Ogden, Virginia/Quebec
Posts: 5,581
Liked 516 Times on 423 Posts
Likes Given: 14

Default

Yes, that's too high for most beers including some stouts. You'll need to either neutralize it with acid, precipitate some of it out with lime or dilute it away with low ion water. The latter is clearly the easiest to do (provided you have RO or other low ion water available). But how much to dilute depends on what else is in the water and the type of beer you are trying to brew. Depending on other mineral content some supplementation of calcium, chloride and possibly sulfate will be required.

More and more brewers who don't want to be bothered with the calculations required to determine dilutions, acid additions and mineral supplementations simply use straight RO water. This can be a great simplifier if your water is variable. For example if the yearly average alkalinity is 141 but it varies from 70 to 210 you would treat quite differently depending on the alkalinity at the time. With RO you simply use enough to swamp the max or do not blend using 100% RO at all times and things are then the same for each brew.

Have a look a the Primer in the Stickies to see how to start out using this approach.

__________________
ajdelange is offline
 
Reply With Quote Quick reply to this message
Old 01-03-2013, 07:09 AM   #5
lewishowardm3
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2012
Posts: 238
Liked 13 Times on 10 Posts

Default

Thanks for the reply. Although I don't know how they test the water in the US but it seems to me that alkalinity is only tested once a year here on the UK so do you think that it must not change much otherwise they would test it more frequently?

__________________
lewishowardm3 is offline
 
Reply With Quote Quick reply to this message
Old 01-03-2013, 11:43 AM   #6
beergynt
Senior Member
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
beergynt's Avatar
Recipes 
 
Join Date: Oct 2008
Location: Morris, IL
Posts: 325
Liked 42 Times on 30 Posts
Likes Given: 10

Default

Phosphoric Acid (85%) will be a good friend to you. Available for a fairly low cost from Duda Diesel via Amazon...

__________________
C6H12O62 CH3CH2OH + 2 CO2
beergynt is offline
 
Reply With Quote Quick reply to this message
Old 01-03-2013, 01:15 PM   #7
ajdelange
Senior Member
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: McLean/Ogden, Virginia/Quebec
Posts: 5,581
Liked 516 Times on 423 Posts
Likes Given: 14

Default

Quote:
Originally Posted by lewishowardm3 View Post
Thanks for the reply. Although I don't know how they test the water in the US but it seems to me that alkalinity is only tested once a year here on the UK so do you think that it must not change much otherwise they would test it more frequently?
Don't know but I'll guess they test it more often than that. They may just not make that information available. OTOH it may be quite constant. You could call or e-mail the supplier and ask if it is variable and if so how much.

Alkalinity is a very simple thing to test. You can buy inexpensive test kits at aquarists, hardware stores, scientific supply houses etc. Or you can test it simply by adding 0.1 N HCl to 100 mL of water until the pH reaches 4.5 as indicated by a pH meter or indicator dye such as brom cresol green - methyl red. The alkalinity, in units of ppm as CaCO3, is the number of mL of acid it takes.

Some breweries and brewers simply add enough acid (in the US usually phosphoric, over there you have CRS) to bring the mash water to pH 5.5. In so doing they are eliminating most (89%) of the alkalinity and, at the same time, measuring it if they keep track of the amount of acid required.
__________________
ajdelange is offline
 
Reply With Quote Quick reply to this message
Old 01-03-2013, 01:43 PM   #8
lewishowardm3
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2012
Posts: 238
Liked 13 Times on 10 Posts

Default

Yeah I've been looking at CRS and also DLS. I have worked out how much I need assuming that 141 ppm o alkaline is correct. I might try and contact the water supplier. Thanks for the help people

__________________
lewishowardm3 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
Water treatment question BOBTHEukBREWER All Grain & Partial Mash Brewing 9 03-07-2012 03:00 PM
pH/water treatment question markgalli All Grain & Partial Mash Brewing 9 02-12-2012 11:27 PM
Water treatment question cjsturch Brew Science 6 02-09-2011 07:52 PM
Water Treatment Question MerryMonk All Grain & Partial Mash Brewing 7 11-21-2009 09:09 PM