Trying to make sense of results from the LaMotte BrewLab and use in them in a
spreadsheet calculators like John Palmers.
Specifically, I am getting seemingly different results for Residual Alkalinity.
Measured values from the LaMotte kit (all "as ppm CaCO3’):
Total Alkalinity = 120
Calcium Hardness = 70
Magnesium Hardness = 30
Using the LaMotte equation I get 96.
Using the Palmer spreadsheet I get 52.
I’ve attached screenshots of both.
Can anyone determine what is right or wrong?