# 1370: RICH ORGANIC MEDIUM ## Main sol. 1370 0.3 g MgSO4 x 7 H2O 0.3 g KH2PO4 0.1 g NH4Cl 1 g CaCl2 x 2 H2O 1 g Na-acetate 0.5 g Yeast extract 0.5 g Peptone 0.5 g Casamino acids 1000 ml Distilled water 1. Adjust pH to 5.9. Add NaOH (0.1 mol/l) 16ml/l after sterilisation from sterile stock solution to readjust pH to 6.8. 2. Add the following from sterile stock solutions to the autoclaved medium: 2 ml **Trace elements solution N1** 2 ml **Vitamin solution N1** ## Vitamin solution N1 400 mg Nicotinic acid 400 mg Thiamine 80 mg Biotin 20 mg Vitamin B12 1000 ml Distilled water 1. Filter sterilised ## Trace elements solution N1 300 mg FeSO4 x 7 H2O 5 mg ZnSO4 x 7 H2O 3 mg MnCl2 x 4 H2O 2 mg H3BO3 5 mg CoCl2 x 6 H2O 1 mg CuCl2 x 2 H2O 2 mg NiCl2 x 6 H2O 3 mg Na2MoO4 x 2 H2O 1000 ml Distilled water