Components High concentration(% w/v) Low concentration(%w/v)
Glucose (X1) 4 2
Peptone (X2) 1 0.5
Yeast extract (X3) 1 0.5
Disodium phosphate (X4) 0.6 0.3
Citric acid (X5) 0.3 0.15
Table 1: Components of HS medium and their high and low concentrations.