Clarification on percentages of nutrients calculated

[elliez]

Hi team, in an effort to confirm that my calculations are precise/ballpark, I would like to know the percentages/concentrations that the calculator is factoring for of some of the listed nutes. For example, it's apparent that when I select Fe 11%, I can confirm that it matches my Fe11% that I am using. However, when I select CuSO4*5H2O, ZnSO4*7H2o, Na2MoO4*2H2O, I cannot confirm that my ingredients match the percentages being calculated for, so that I can apply an adjustment calculation if necessary. Is there a way to get a list of the default percentages of the nutrients/compounds in the calculator?

Also, will you consider adding the chelated forms, non sulfate, of these micronutrients to the calculator in the future?

thanks so much!!

 

[Allwissend]

The percentages come from the mass percent each element contributes to the molar mass of the substance. With very small variations (mostly from the number of decimals being used), they are fixed for each substance, independent of the manufacturer.

The manufacturer will usually give you the purity of the overall salts such as : "at least 98% CuSO4*5H2O" the rest of 2% can be other small contaminants related to the manufacturing or storage process (water, other hydrates,etc.). You can take make adjustments for this percentage, but because the actual quantity is really small, often beyond our ability to accurately measure at home, it is not taken into consideration.