1) What is dry ice?
Dry ice is solid Carbon Dioxide (CO2) with a low temperature of -78° C (-109° F). At atmospheric pressure, solid CO2 sublimates or changes directly to CO2 gas without a liquid phase.
2) How long are samples kept in dry ice? And does the long-term storage affect any sample analysis?
Samples can be kept frozen in dry ice for days, depending on the analytes/biomarker frozen stability. As dry ice has a limited shelf-life, long term storage of specimens can be jeopardized in case of insufficient replenishment of dry ice. For long term storage of specimens we recommend using a standard medical/scientific freezer instead of dry ice, with appropriate freezer’s temperature monitoring. Continue reading