Author Topic: PH Mind Melt  (Read 2235 times)

Offline flbrewer

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PH Mind Melt
« on: March 13, 2016, 07:16:41 PM »
Hi guys...for those following my saga, I am really perplexed at some readings I'm getting.

I didn't have a change to measure a proper PH measurement until I used a sample pre-boil OG (post vorlauf). This sample came out to 4.87! **

My post-boil PH reading was even stranger at 5.01, isn't this supposed to go down?

**For those interested in the specifics on what I added to this beer please check here. I expected it to be low, but darn this is really low. https://www.homebrewersassociation.org/forum/index.php?topic=26283.0

Offline brewinhard

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Re: PH Mind Melt
« Reply #1 on: March 13, 2016, 07:25:43 PM »
Did you cool your sample down to room temps prior to measuring?

Offline flbrewer

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Re: PH Mind Melt
« Reply #2 on: March 13, 2016, 07:43:52 PM »
Did you cool your sample down to room temps prior to measuring?

Yup, 72 degrees.

trentm

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Re: PH Mind Melt
« Reply #3 on: March 13, 2016, 08:00:31 PM »
What did you actually end up adding?

Offline flbrewer

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Re: PH Mind Melt
« Reply #4 on: March 13, 2016, 08:18:14 PM »
Strike- 2 grams Gypsum, 7 grams CaCl
Sparge- 2 grams Gypsum, 7.5 grams CaCl

2 ml Lactic 88%

trentm

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Re: PH Mind Melt
« Reply #5 on: March 13, 2016, 08:29:10 PM »
Well, friend, perhaps I wasn't clear in the other thread, but I was warning you against using those amounts of water salts.

In fact, I posted the numbers that would have provided a satisfactory pH and advised against using acid with such a large amount of water salts.

I also advised against trying to match such a large amount of calcium.

https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339934#msg339934
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339947#msg339947
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339996#msg339996
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339999#msg339999
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg340000#msg340000



Offline flbrewer

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Re: PH Mind Melt
« Reply #6 on: March 13, 2016, 08:33:35 PM »
Well, friend, perhaps I wasn't clear in the other thread, but I was warning you against using those amounts of water salts.

In fact, I posted the numbers that would have provided a satisfactory pH and advised against using acid with such a large amount of water salts.

I also advised against trying to match such a large amount of calcium.

https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339934#msg339934
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339947#msg339947
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339996#msg339996
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg339999#msg339999
https://www.homebrewersassociation.org/forum/index.php?topic=26283.msg340000#msg340000

Trent, you were clear. No need to repost all of your comments. I take everyone's advice here with a grain of salt. I assumed that one of the two brewing software tools would have got me to where I needed.

Offline flbrewer

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Re: PH Mind Melt
« Reply #7 on: March 13, 2016, 08:36:11 PM »
Most importantly...will my beer suck?  8)

Offline Wort-H.O.G.

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Re: PH Mind Melt
« Reply #8 on: March 13, 2016, 10:16:22 PM »
Justin- did you measure your gravity...just curious how well conversion was if your PH was really that low.
Ken- Chagrin Falls, OH
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Offline flbrewer

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Re: PH Mind Melt
« Reply #9 on: March 13, 2016, 10:26:00 PM »
Justin- did you measure your gravity...just curious how well conversion was if your PH was really that low.

Yes, Estimated Pre- boil OG was 1.042, I hit 1.044.
Estimated Post- boil OG was 1.052, I hit 1.050.


Offline Wort-H.O.G.

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Re: PH Mind Melt
« Reply #10 on: March 13, 2016, 10:27:38 PM »
Justin- did you measure your gravity...just curious how well conversion was if your PH was really that low.

Yes, Estimated Pre- boil OG was 1.042, I hit 1.044.
Estimated Post- boil OG was 1.052, I hit 1.050.

i wonder if you're getting good readings on that PH meter.
Ken- Chagrin Falls, OH
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Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
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Offline mchrispen

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Re: PH Mind Melt
« Reply #11 on: March 13, 2016, 10:28:49 PM »
Quote
i wonder if you're getting good readings on that PH meter.


My thoughts exactly. You need to work to get a pH that low.
Matt Chrispen
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Blogging from the garage @ accidentalis.com
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Offline Wort-H.O.G.

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Re: PH Mind Melt
« Reply #12 on: March 13, 2016, 10:31:37 PM »
Quote
i wonder if you're getting good readings on that PH meter.


My thoughts exactly. You need to work to get a pH that low.

yeah I've never had something that low. And while I don't know for sure, Martin and some readings suggest conversion would be pretty sub par at that low of mash PH, and yet he exceeded his target.
Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest

Offline Wort-H.O.G.

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Re: PH Mind Melt
« Reply #13 on: March 13, 2016, 10:39:51 PM »
Strike- 2 grams Gypsum, 7 grams CaCl
Sparge- 2 grams Gypsum, 7.5 grams CaCl

2 ml Lactic 88%

so i plugged that into basic recipe with RO water and ended up with target PH of about 5.2.   while that is a metric crap ton of cacl and then the 2ml lactic acid, still should have been well north of 4.8ish.

what was your grist -base + ?

edit: ?? water volumes also for strike and sparge
« Last Edit: March 13, 2016, 10:41:55 PM by Wort-H.O.G. »
Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest

Offline HoosierBrew

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Re: PH Mind Melt
« Reply #14 on: March 13, 2016, 10:43:30 PM »
Justin, did you enter your volumes, grist, and lovibonds into Brunwater correctly? What size final batch? I'm trying to get my head around using almost 15g of CaCl2. What profile did you use? Just curious.
Jon H.