Parameters

Materials

Total bacteria count, cfu/ml

Nutrient agar medium (Peptone 5 g/L, NaCl 5 g/L, beef extract1.5 g/L, yeast extract 1.5 g/L, agar 15 g/L, pH 7.4)

Total Coliform Count, cfu/ml and Total E. coli Count, cfu/ml

Selective medium HiCrome coliform agar (Peptone 3 g/L, NaCl 5 g/L, dipotassium hydrogen phosphate 3 g/L, potassium dihydrogen phosphate 1.7 g/L, sodium pyruvate 1 g/L, l-tryptophan 1 g/L, sodium lauryl sulphate 0.1 g/L, chromogenic mixture 0.2 g/L, agar 15 g/L, pH 6.8).