Dissolve in each 1 litre of tap water: peptone, 160 mg; meat extract, 110 mg; urea, 30 mg; anhydrous dipotassium hydrogen phosphate, (K2HPO4), 28 mg; sodium chloride, (NaCl), 7 mg; calcium chloride dihydrate, (CaCl2.2H2O), 4 mg; magnesium sulphate heptahydrate, (MgSO4.7H2O), 2 mg.
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