How should I thaw the PromoCell normal human cells to obtain a high viability?

General protocol for recovery of anchorage-dependent primary cells: Remove vial from liquid nitrogen, transport it on dry ice to the cell culture lab. Thaw in a 37°C waterbath for approx. 2 min, until it is just defrosted. Keep the vial immersed in water until just below the screw cap during thawing and only remove it shortly after approx. 90 sec to check the progress. Carefully disinfect the vial with plenty of 70% EtOH under the laminar flow hood and aseptically transfer the thawed suspension into an appropriate TC dish with growth medium (pre-warmed in the incubator for > 30 min). The cells usually attach within a few hours. Perform media change after 24 hrs at the latest to remove residual DMSO from the freezing media. Additional information can be found in the instruction manuals of our cells.