SO SINCE WHEN HAVE UPS AND FED EX HAD -80 CELSIUS STORAGE CAPABILITIES?
PACKING GOODS IN DRY ICE IS AN AMETEUR, IN EFFICIENT, CRAP WAY OF FREEZING OR COOLING SENSITIVE MATERIALS.
MATERIALS IN DIRECT CONTACT WITH DRY ICE SURFACE WILL BE SUFFICIENTLY COOLED BUT POOR PENETRATIVE COOLING MEANS SURFACES OR INNER CONTENTS OF COOLED/FROZEN GOODS NOT IN DIRECT CONTACT WITH DRY ICE WIILL BE SEVERAL DEGREES WARMER.
FIRST HAND EXPERIENCE WITH SAME.
YAY DECOMPOSING VACCINES!