Solution A:
NaCl........................25.0 g
MgSO4 . 7H2O .................5.0 g
CaCl2 . 2H2O .................0.2 g
KCl..........................0.1 g
NaNO3 ........................2.0 g
Casamino acids...............2.5 g
Iota-Carrageenan.............2.5 g
Distilled water..............1.0 L
Solution B:
0.2 M Na2HPO4 ...............60.0 ml
Solution C:
0.3% FeSO4 . 7H2O ...........10.0 ml
Autoclave each solution separately at 121C for 15 minutes. Add Solutions B and C aseptically to Solution A. The final pH is approximately 7.2. For solid medium, add 15.0 g of agar to Solution A.