Table 1 Nutrient composition and cost estimation for BBM growth medium

Di-potassium hydrogen orthophosphate (K₂HPO₄)

18.75

0.001032

Potassium di-hydrogen orthophosphate (KH₂PO₄)

43.75

0.00072

Magnesium sulfate MgSO₄.7H₂O

18.75

0.050565

Sodium nitrate (NaNO₃)

62.5

0.003125

Calcium chloride (CaCl₂.2H₂O)

6.25

0.00089

Sodium chloride (NaCl)

6.25

0.000405

EDTA tetrasodium salt (EDTA-Na₄)

5

0.00112

Potassium hydroxide (KOH)

3.1

0.000453

Ferrous sulfate (FeSO_4.7H2O)

0. 498

0.07569

Boric acid (H₃BO₃)

1.142

0.012738

Zinc sulfate (ZnSO₄.7H₂O)

0. 0353

0.000021

Manganese chloride (MnCl₂.4H₂O)

0. 0058

0.000004

Cupric sulfate (CuSO₄.5H₂O)

0.0063

0.000014

Cobaltous nitrate (Co(NO₃)₂.6H₂O)

0.002

0.000002

Sodium molybdate (Na₂MoO₄.2H₂O)

0.0048

0.000006

Total costs

0.14679