# 756d: NITROSPIRA MOSCOVIENSIS ## Main sol. 756d 1 ml **Trace element solution** 100 ml **Stock solution** 0.5 g NaNO2 899 ml Distilled water 1. Adjust pH to 8.6 with NaOH or KOH. Autoclave and leave the medium to stand for 2 - 3 days so that pH can ajust itself to pH 7.4 - 7.6 . ## Trace element solution 33.8 mg MnSO4 x H2O 49.4 mg H3BO3 43.1 mg ZnSO4 x 7 H2O 37.1 mg (NH4)6Mo7O24 97.3 mg FeSO4 x 7 H2O 25 mg CuSO4 x 5 H2O 1000 ml Distilled water ## Stock solution 0.07 g CaCO3 5 g NaCl 0.5 g MgSO4 x 7 H2O 1.5 g KH2PO4 1000 ml Distilled water