How Dry Ice Affects Viral Vector Sample pH & How to Avoid It
Type
Blog Post
Published
June 20, 2017, 2:30 p.m.
...in fact, permeable to CO2 at low temperatures (-80°C) and once in the tube, the CO2 can alter the pH of...pH indicator phenol red. We froze samples in a -80°C freezer and then moved them to a closed dry ice storage...samples to controls that were only stored in a -80°C freezer and not exposed to CO2/dry ice. All samples...then tested whether returning the tubes to the -80°C freezer after storage on dry ice allowed the CO2 to... (Fig.4). To test this, we froze the tubes at -80°C and then moved them to closed storage on dry ice for...for 48 hours. We then moved the tubes back to a -80°C freezer for various recovery periods between 0 and... samples to controls that were only stored at -80°C. We then thawed the tubes after the indicated incubation...