Deep frozen
In pharmaceutical and biotech shipping, deep frozen often describes applications at very low temperatures. However, the term alone does not define a globally uniform temperature range. Selecting packaging requires a specific upper limit, a lower limit where applicable, and the required protection duration.
What information must be specified?
- The product’s permitted temperatures and its sensitivity to thawing or excessive cooling.
- The required shipping duration, payload and ambient conditions, including potential waiting periods.
- The appropriate coolant and evidence covering the complete packaging configuration.
Does deep frozen mean dry ice?
No. Dry ice is a coolant, not a product requirement. It is used for suitable very cold shipments but does not, on its own, guarantee the required range. A −21 °C PCM is not a universal substitute either. Terms such as frozen or ultra-low temperature should also be supplemented with specific numerical limits in a specification.
Related terms: Frozen · Dry ice shipper
Technical references:
WHO: Storage and transport of temperature-sensitive pharmaceutical products