# 1002: ECTOTHIORHODOSYNUS MEDIUM ## Main sol. 1002 0.5 g KH2PO4 0.5 g NH4Cl 20 g NaCl 0.2 g MgCl2 x 6 H2O 0.1 g CaCl2 5 g Na2CO3 5 g NaHCO3 1 g Sodium acetate 0.1 g Yeast extract 0.5 g Na2S2O3 x 5 H2O 0.1 g Na2S x 9 H2O 1 ml **Trace element solution SL-6** 20 µg Vitamin B12 1000 ml Distilled water 1. Prepare the NH4Cl, CaCl2, carbonate, bicarbonate and sulfide as a single sterile stock solution and add to the sterile medium after autoclaving. The pH should be adjust to 9-9.5. ## Trace element solution SL-6 0.1 g ZnSO4 x 7 H2O 0.03 g MnCl2 x 4 H2O 0.3 g H3BO3 0.2 g CoCl2 x 6 H2O 0.01 g CuCl2 x 2 H2O 0.02 g NiCl2 x 6 H2O 0.03 g Na2MoO4 x 2 H2O 1000 ml Distilled water