Now this needs some clarification so I understand. What ‘unusually low pH’ are we talking about?
pH estimates for cire's beer like these:
Post pH_Est
67 5.44
117 5.34
120 5.35
125 5.34
144 5.46, 5.42
I don't think you mean that. Imperial units are pretty much gone by the wayside. The UK, Australia, New Zealand, Canada etc. have all replaced imperial gallons (4.546 L), at the fuel pumps, at least, with metric and in the US we always used the US gallon (3.785 L). The Voltmeter spreadsheet accepts Imperial gallons as an input and it also accepts shekels for malt weight but that was done to demonstrate that you can easily add in any units of measure for which you have the conversion factors (to and from kg).I think in ‘Imperial’ so ‘Metric’ is a second language to me.
It's not time for that yet. We currently know that there are discrepancies between the calculators and I think I know in which part the discrepancies arise. We need to resolve those before going into the laboratory/brewery. What we are doing now is sort of like what you propose but all, at this point, dry. A standard grist and standard water have been put forth and we are asking "What does your calculator predict." The Gen I calculators, at least the two posted here (has anyone put cire's beer into Brun Water?) are giving much lower answers than seem reasonable given the published malt data we have available. Measurements of pHDI by cire for two of the malts help solidify the comparisons but the Gen I calculators continue to produce what seem to be low results. Putting those measurements into the Gen II program gives 5.54 which is moving into striking distance WRT the predictions of 5.44, 5.46, 5.43 but I'd still like to know why there is a difference of 0.1. WRT to 5.34 - that's a difference of 0.2 which is, IMO, a lot and ought to be explained.Let’s do a science experiment. Where participants all agree to....
Remember that the Voltmeter/trouble shooter is intended to help developers trouble shoot their spreadsheets. That is why the proton deficit summary table was added - it puts a pretty clear picture of what is going on in a mash right in front of the user. But it is, naturally, metric based. By 'naturally' I mean that mks units are the natural units in which one does calculations of this sort. 2.2 lbs/kg and 3.785 L/US gal shouldn't be too hard to deal with.
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