0.06 ppm EDTA Fe, 0.04 ppm DTPA Fe = 0.1 ppm Total Fe
0.05 ppm EDTA Fe, 0.05 ppm DTPA Fe = 0.1 ppm Total Fe
0.02 ppm EDTA Fe, 0.04 ppm DTPA Fe, 0.04 Fe Gluconate = 0.1 ppm Total Fe
0.06 ppm HEEDTA Fe, 0.04 ppm DTPA Fe = 0.1 ppm Total Fe
I believe this is what you meant? the total ppm of Fe...