# 1149: OCEANITHERMUS MEDIUM ## Main sol. 1149 0.78 g K2HPO4 0.75 g KH2PO4 10 ml **Trace element solution** 10 ml **Vitamin solution** 0.36 g MgCl2 x 6 H2O 0.1 g CaCl2 x 2 H2O 0.53 g NH4Cl 0.14 g Na2SO4 20 g NaCl 2 g Yeast extract 1.7 g NaNO3 1000 ml Distilled water 1. Prepare the medium without vitamins, boil and cool under a nitrogen:carbon dioxide (80:20 v/v) atmosphere. Vitamins (filter sterilized and stored under nitrogen) and 100 ml 0.6 M NaHCO3 solution (sterilized and stored under nitrogen) are added from stock solutions. 2. The pH should be pH 6.5. ## Trace element solution 12.8 g Nitrilotriacetic acid (NTA) 1.35 g FeCl3 x 6 H2O 0.1 g MnCl2 x 4 H2O 0.024 g CoCl2 x 6 H2O 0.1 g CaCl2 x 2 H2O 0.1 g ZnCl2 0.025 g CuCl2 x 2 H2O 0.01 g H3BO3 0.024 g Na2MoO4 x 2 H2O 1 g NaCl 0.12 g NiCl2 x 6 H2O 0.026 g Na2SeO3 x 5 H2O 1000 ml Distilled water ## Vitamin solution 2 mg Biotin 2 mg Folic acid 10 mg Pyridoxine hydrochloride 5 mg Thiamine-HCl x 2 H2O 5 mg Riboflavin 5 mg Nicotinic acid 5 mg D-Calcium pantothenate 0.1 mg Vitamin B12 5 mg p-Aminobenzoic acid 5 mg Lipoic acid 1000 ml Distilled water