ESF 921™ Insect Cell Culture Medium is a complete serum-free, protein-free medium developed for robust cell growth, protein production and baculovirus vector production for a wide range of insect cells including Sf9, Sf21, Tni (High Five™), and Drosophila S2. ESF 921 contains L-Glutamine and Kolliphor® P188 (Pluronic® F68).This serum-free, protein-free insect cell culture medium provides unmatched cell growth and expression for a wide range of insect cells including Sf9, Sf21, Tni (High Five™) and Drosophila S2. Sf9 cell densities of 15 x 106 cells/ml or greater Produces high titer baculovirus vector yields of 5E8 to 3E9 infectious units/ml. Kolliphor® is a registered trademark of BASF SE.