Fast-Media® Hygro XGal Agar Microwaveable medium for selection of E. coli transformants Fast-Media® Hygro XGal formulation is LB based agar medium supplemented with Hygromycin, it is used for selection of resistant E. coli colonies after transformation by vectors carrying the Pac resistance gene. 1 pouch = 8-10 agar plates Selective Antibiotic: Hygromycin Stability: 48h at 37°C or 4 weeks ar 4°C Sterility guaranteed