sentence: Briefly , 2 mM MgSO , 0.1 mM CaCl , 100 µ g / mL ampicillin , 50 µ g / mL kanamycin , 1 mL of 100x minimum essential vitamin stock , 96.22 mM Na HPO , 44.1 mM K HPO , 17.1 mM NaCl , 5 g glucose per L ( 0.5 % w / v ) , 3.75 g NH Cl per L ( 0.375 % w / v ) , and 20 mL of solution C per L ( Soln .