Today I decided to take three pH samples at different times during the mash while brewing 15BBL of porter (6.2% ABV) and the results are all over the place. All samples were cooled to 70*f. Not sure which reading is most important.
The first sample I pulled was 15 mins after mashing in and the pH read at 5.32. (It took about 20 mins to mash in).
Since I was shooting for closer to 5.45, I added some baking soda (amount adjusted from Brun Water software). Mixed the mash for about 15 mins and pulled another sample (but didn't measure because I didn't have time to cool the sample). I immediately started the mash out (no added water). Once the mash reached 172*f (about 40 mins later), I pulled another sample.
Now I have the three samples in front of me:
Sample 1 (pulled @15 mins): It now reads pH 5.49 (initially read 5.32 at the time the sample was pulled)
Sample 2 (pulled @ 30 mins with added baking soda): It now reads pH 5.53
Sample 3 (pulled just after mash out temp reached, just before vorlauf): It now reads pH 5.39.
I'm not quite sure which of these readings is the most important. Any experienced advice would be greatly appreciated.
Cheers!
The first sample I pulled was 15 mins after mashing in and the pH read at 5.32. (It took about 20 mins to mash in).
Since I was shooting for closer to 5.45, I added some baking soda (amount adjusted from Brun Water software). Mixed the mash for about 15 mins and pulled another sample (but didn't measure because I didn't have time to cool the sample). I immediately started the mash out (no added water). Once the mash reached 172*f (about 40 mins later), I pulled another sample.
Now I have the three samples in front of me:
Sample 1 (pulled @15 mins): It now reads pH 5.49 (initially read 5.32 at the time the sample was pulled)
Sample 2 (pulled @ 30 mins with added baking soda): It now reads pH 5.53
Sample 3 (pulled just after mash out temp reached, just before vorlauf): It now reads pH 5.39.
I'm not quite sure which of these readings is the most important. Any experienced advice would be greatly appreciated.
Cheers!
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