Table 2.

Extracellular metals and vitamins concentrations

Coded Levels	−1	0	+1
Extracellular metals concentration
FeCl3,6H2O (M)	0.5 10−5	1 10−5	1.5 10−5
Na2EDTA,2H2O (M)	0.5 10−5	1 10−5	1.5 10−5
CuSO4,5H2O (M)	2 10−8	4 10−8	6 10−8
Na2MoO4,2H2O (M)	1.5 10−8	3 10−8	4.5 10−8
ZnSO4,7H2O (M)	4 10−8	8 10−8	12 10−8
CoCl2,6H2O (M)	2.5 10−8	5 10−8	7.5 10−8
MnCl2,4H2O (M)	4.5 10−7	9 10−7	13.5 10−7
Extracellular vitamins concentration
Thiamine HCl (vitamin B1) (M)	1.48 10−7	2.22 10−7	2.96 10−7
Biotin (vitamin H) (M)	1.025 10−9	1.5375 10−9	2.05 10−9
Cyanocobalamin (vitamin B12) (M)	1.845 10−10	2.7675 10−10	3.69 10−10