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In keeping with my policy of transparency, here are some of the key current version inner workings of Mash Made Easy (MME): Main Sequence BC (malt acidity for exclusively a pulverized malt*) = 34.5+LN(Lovibond)*5.75 Examples: Lovibond = 1.2, BC = 34.5+LN(1.2)*5.75 = 35.55 mEq/Kg_pH Lovibond =...

Aside from changing the "Not Categorized" grist component designator to read "Main Sequence", and making this designation visible, versions 11.30 and 11.40 are identical. Some may prefer main sequence visibility (11.40) and some may prefer main sequence invisibility (11.30).

OK, I see now where my 8.30 is actually properly working and giving exactly the results which you see with the "percent log base 10 mash pH" cell set to 100% as seen within your snapshot image, meaning advice to add 13.24 mL of 10% Phosphoric Acid for the grist buffer multiplier set to 0.72 (as...

It seems that with the upgrading of spreadsheets to newer (later) versions than I used in developing 8.30 this log/linear functionality which in the past made a huge difference and was critical to proper functioning has been rendered corrupted and non-functional. I'm also seeing concerning...

Ah, I see where you have the percent log base 10 mash pH set to 100%. Change it to 40% please. Confusion over internal use of blended log and linear eventually led me to abandon that math model approach, but as you can see, when the balance is right it isn't far off from 11.30 or 11.40...

Is your 8.30 set to it's download defaults? I.E.: 1) Is the grist buffer multiplier set at 0.70? 2) Is the percent log base 10 mash pH set at 40%?

@pers, here is what you should be seeing, given that I now have your water volume and water analyticals:

I always advise that MME works properly only in LibreOffice Calc and certain versions of Excel. That said, you have never revealed your mash water analyticals, or your mineral additions.

Mash Made Easy version 11.40 is now available for free download in both USA and fully Metric versions. Changes since version 11.30: 1) Per the recent request of one of our valued HBT members I've changed the apparently somewhat confusing "Not Categorized" Malt/Grain Classification drop down...

I went into my archives and brought out version 8.30. After entering your grist just as I did above for 11.30, version 8.30 (also in its download default state) instructed me to add 53.9 mL of 10% Phosphoric Acid whereby to bring this grist (when mashed in DI water) to a mash pH of 5.20...

In MME version 11.30 as set to it's download defaults I get 48.7 mL of 10% Phosphoric as needed to bring this grist to a target of 5.2 pH within the mash for the case of mashing in DI water. Not 69.54 mL. And if mashing the same to a target of 5.40 pH, no acid is required. Thus roughly 50 mL...

If you were to mash 13 Lbs. of this grist in 5.4 gallons of your water (instead of mashing it in 9 gallons as I previously suggested), and then sparge with 3.6 gallons, then for this case your mash will settle in after 60 minutes at about 5.28 pH, and bringing this to about 5.40 pH will require...

A minor clarification. Back in post #4 above I should more properly have stated: 13 pounds of your aggregate grist will deliver ~135 mEq's of Acidity with respect to a desired mash pH of 5.40, but this mEq valuation will vary with respect to your actual mill gap crush.

Since I've emphasized again and again just what you are claiming, via stating that such "hard" (or actual) valuations are rarely if ever provided via the maltsters, and that real data only exists for a small percentage of the myriads of malts and grains and adjuncts available to us, separate log...

@CleanEmUpIves, If a program is dealing internally with mEq's, and it accounts for Ka or pKa related dissociation, how might that be in any way different from calling it (or more likely, not calling it) a so called "proton deficit" based math model. All chemical reactions occur on strictly an...

@CleanEmUpIves, you are misrepresenting Mash Made Easy in this case by not properly setting the Malt Classification drop down column to "Caramel/Crystal" for the 170L Dark Crystal Malt.

9 gallons of mash water and 13 pounds of grist yield a water to grist ratio of ~2.77 Qts/Lb. Not 5.5.

9 gallons of your water will deliver ~150 mEq's of Alkalinity. 13 pounds of your grist will deliver ~135 mEq's of Acidity. You have a mild surfeit of about 15 mEq Alkalinity. But the Calcium and magnesium in your water will evolve some additional acidity from your grist, so in the end you...

I'm going to guess that if you were to BIAB 13 pounds of this grist in 9 gallons of mash water, using your 270 ppm bicarbonate tap water straight up for this, with no mineral additions, your mash pH will settle in at right around 5.44 at the end of a 60 minute mash.

Good advice, sans that the stability indicator on Apera pH meters indicates stability has been achieved way too soon. Or at least it does so on my Apera pH60.