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AJ, your previous post was empty. I have a layman's understanding of the high level concepts here. I believe that the buffering capacity of a solution is the quantity of a acid or base that will change the pH (change 1 liter of solution by 1 pH unit). I suppose there is an minimum amount...

AJ, thanks for the info on the mash technique. It's been a long, long time since I've had a chemistry class. I know that mEq stands for milliequivalents but 40 mEq of what per kg of what (assume grain here) and is that times the measured pH? You said I can use that to determine how much acid...

Yes. I have been pretty rigorous in following AJs procedures.

So far, with my meter (Milwaukee 102) calibrated and confirmed stabilized, I am not coming close to the pH that I am expecting to hit from Bru'n water. So far I have been off as much as .2 to .3 more than I would expect. It was suggested that I should perform a test mash. So far I have not...

I would like to do a test mash to verify and adjust as necessary the water additions suggested by Bru'n Water so that I make sure I hit my desired mash pH. I am looking for some ideas on the best way to actually do the test mash. I obviously can't do with my brew dauy equipment. I'm thinking...

Any bigger it will bite me. Got it. Thanks!

I don't see any info in your stickys or in the 102 manual on testing for electrode stability. How do you do that.

Thanks AJ. No acid added, only Gypsum, Calcium Chloride, and Baking Soda. No, I wasn't surprised with the 5.63. Is there any info out there on best practices for a test mash. I'm assuming a test mash would be with about a pound of grain with the appropriate proportions of each grain. I...

I have a single tier, 3 keggle (15.5 gal) system with 2 pumps. My mash tun has a false bottom with .7 gals under the false bottom. I figure my total mash water to include the .7 gals. I heat the mash water to strike temp while recirculating with one of the pumps. When I reach strike temp, I...

Thanks. That'll work!

Can someone recommend a growler filler for the Perlick 650SS that actually fits. I bought one on Amazon meant to work on all the 600 series faucets, but it does not fit. It's too big and there's no way you can force it. I understand that the 630 and the 650 are the same size. Would...

I need four 5-1/8" SS shanks with 1/4" bore. I have four 4-1/8" SS shanks to trade if that works for someone, but looking for four of the 5-1/8" ones. David

I was verifying that the Rahr Pale Ale is more acidic because I have a brew planned with 85% Rahr, 7% Crystal 90, and 8% Roasted chocolate, so increasing the Rahr from 3.5 to 6.5L drops the estimated pH by almost .1. I thought I remembered a post by AJ that questioned that. I see from the post...

In the Grain Bill Input sheet there is a Special Note for Rahr base malts to add 3L to account for the additional acidity of Rahr base malts. Is this true? I kinda remember a post a long time ago by AJ or someone that questioned this.

I have a 15.5 gal mash keggle (3 keggle, 2 pump system) with .69 gal underlet volume (beneath the false bottom). I heat my mash water to strike temp and dough in the grain which of course will be in the water above the false bottom. I only recirc the mash water if I have to raise temp. I'm...

EnglishAndy, since that was almost 2 years ago, my memory is a little hazy. I did go with Ca 27, Mg 5, Na 14, SO4 32, Cl 28, Bicarbonate 4. I tend to like my beers more on the malty side so the SO4 and Cl is close to a 1:1 ratio. My notes indicate pH turned out higher that Bru'n Water...

Martin, I used 1.16 for that brew. I have downloaded 1.18 and will use that in the future. AJ, thanks for the primer. Will take a bit of practice/study to get good with the math.

I'm the OP. While I've been brewing for a long time, I'm a new guy to testing and adjusting pH to my brewing. AJ, I've read your sticky on pH Meter Calibration and Use. That's been very helpful in setting up brew day testing procedures. A great article. I use Bru'n Water. I have 2 brews so...

I'm looking for some suggestions for the best way to do a test mash with a small portion of the grain bill to determine pH. I see where some people use nested containers on the stove like a metal pan in a larger pot of warm/hot water. I am assuming: Scale down grain bill to about a pound of...

No. Already sold.