Quantcast

lowering sparge water ph

HomeBrewTalk.com - Beer, Wine, Mead, & Cider Brewing Discussion Community.

Help Support Homebrew Talk:

colinwollmann

Well-Known Member
Joined
May 9, 2007
Messages
66
Reaction score
0
Location
manitoba,canada
What do you guys use to lower sparge water p.h?My water is high in p.h.,so I was lookin for some info on how to get it to a reasonable level.I use gypsum to adjust my mash p.h.

btw,my p.h. is at about 8.0 to8.2

thanks
 

Alamo_Beer

Well-Known Member
Joined
Aug 8, 2006
Messages
2,436
Reaction score
14
Location
Manor, Tx
There is a good chapter in www.howtobrew.com about water chemistry. Either check it out or start using 5 star ph buffer 5.2 (or whatever it's called)

Good luck!
:mug:
 

malkore

Well-Known Member
Joined
Jun 15, 2007
Messages
6,924
Reaction score
50
Location
Nebraska
I think sparge water is less important, because you've already completed the enzymatic activity, and for batch sparging the water just isn't int he MLT long enough.

for fly sparging, it might matter. I only batch sparge...
 

Brew-boy

Well-Known Member
Joined
May 31, 2006
Messages
2,272
Reaction score
18
Location
Lapeer, Michigan
Pro brewers do worry about the PH of the sparge water. Most try and not let it get over 6.
 

Lil' Sparky

Cowboys EAC
Joined
Feb 6, 2006
Messages
3,952
Reaction score
91
Location
Honolulu, HI
I add the 5.2 pH buffer to the sparge water, too. The sparge pH will affect the wort pH, which affects how the hops and the resulting beer tastes, so why not treat it (if you've got alkaline water).
 

Got Trub?

Well-Known Member
Joined
Apr 16, 2007
Messages
1,538
Reaction score
12
Location
Washington State
Sparge water pH is important for fly sparging as you can get tannin extraction once it gets above ~6. Just like the mash though it is not your water pH in your hot liqour tank that is important but rather the pH it equilibrates to when mixed with your grain bed. As the fly sparge proceeds the sugar and pH lowering compounds are rinsed out of your grain bed and the pH starts to climb. Many fly sparge and don't allow their runnings SG fall below a certain value like 1.010 or 1.008 - this is a surrogate marker for the pH and much easier to measure. If your water is working fine for the mash I wouldn't worry about the sparge. If you need to adjust the mash with 5.2 or acid to get an appropriate mash pH I would also adjust the sparge water - but only when fly sparging. With a batch sparge you aren't rinsing until down to a very dilute solution so the runnings pH doesn't rise anywhere near as much in your last batch sparge.

GT
 

brad.maynes

Member
Joined
Dec 5, 2007
Messages
14
Reaction score
0
Location
Ann Arbor, MI
When I acidify my sparge water, I use lactic acid, which seems to work pretty well. There's a small section in Dave Miller's old homebrewing book (The Complete Handbook of Home Brewing), so I'd guess there's probably one in his new one as well.

BLM
 
Top