Cell and tissue freezing media is used to improved cell recovery and viability after thawing from cryostorage. Some options come as a ready-to-use freezing mix, with no need to combine multiple products each time to make a home-brew freezing solution. Cryopreserving your cells properly is one way to ensure quick and accurate results when performing cell culture. These products are tested for pH, appearance, and sterility. Recovery, morphology and differentiation of hESCs and hiPSCs are confirmed after cryopreservation and thawing.