Calculating charge of water in John Palmer's book "Water"
- Thread starter iuva
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It is kinda hard to read sideways, but reminds me why I use software!
John Palmer seems to put a lot of emphasis on Residual Alkalinity and using Calcium and Magnesium to manipulate mash pH. I tend to follow the advice that I got from other sources to use salt additions to hit my target mineral levels, then use Acid or Bicarbonate to adjust pH.
John Palmer seems to put a lot of emphasis on Residual Alkalinity and using Calcium and Magnesium to manipulate mash pH. I tend to follow the advice that I got from other sources to use salt additions to hit my target mineral levels, then use Acid or Bicarbonate to adjust pH.
My bad. I wasn't able to fix it. It says "need valid ID"
I agree but I would like to understand the calculation since I'm reading the book. It may help me in the future.
Thank you for the advice. I was not able to understand how he calculated charges but at least I understood the difference he makes between alkalinity and total alkalinity: two different units, respectively 'mEq/L' and 'ppm as CaCO3' to express the same notion. Where alk = total alk/equivalent mass of calcium carbonate
Equivalent mass of calcium carbonate = 50g
It seems that he did a mistake in page 95 when he wrote Ct=Total alkalinity / delta Charge 0 instead of Ct=(Total alkalinity/50) / delta Charge 0
Last edited:
Silver_Is_Money
Larry Sayre, Developer of 'Mash Made Easy'
You must reference values derived from the chart found on page number 96. The below listed non linear regression reasonably accurately mirrors the chart over the span of pH's ranging from 4.3 to 9.0. Variable 'x' within the below regression formula is the water pH. For your specific request the pH's to assign to 'x' would be 4.3 and 7.5 respectively. I hope this helps.
Water Charge (mirroring chart on page 96) ~=-780.132225013302+930.675267920368*x-468.985903380742*x^2+129.285941580041*x^3-21.0407808980981*x^4+2.02073321523162*x^5-0.106055330905865*x^6+0.00234788488449278*x^7
Water Charge (mirroring chart on page 96) ~=-780.132225013302+930.675267920368*x-468.985903380742*x^2+129.285941580041*x^3-21.0407808980981*x^4+2.02073321523162*x^5-0.106055330905865*x^6+0.00234788488449278*x^7
