Matrix Tap water Mineral water Infant formula powder prepared with tap water Infant formula powder prepared with mineral water pH 7.06 ± 0.01 5.97 ± 0.01 6.89 ± 0.01 7.11 ± 0.01 Conductivity (mS cm−1) 0.48 ± 0.05 0.047 ± 0.005 2.0 ± 0.5 1.54 ± 0.05 Code T MW MT MMW The ...