QBI’s Serum Free Cryo Medium is a sterile, 2X concentrated cell freezing medium containing DMSO developed for the cryopreservation of cells grown under serum-free conditions. Serum Free Cryo Medium is an animal-free, protein-free, chemically defined medium containing DMSO and other cryoprotective components. The 2X concentrated formulation allows for dilution with either conditioned medium or complete fresh medium. The Serum Free Cryo medium does not contain phenol red.