# J61: YEAST-STARCH AGAR (B) ## Main sol. J61 15 g Starch (soluble) 4 g Yeast extract (BD-Difco) 0.5 g K2HPO4 0.5 g MgSO4 x 7 H2O 15 g Agar 1000 ml Distilled water 1. Adjust pH to 7.4.