Liquid nitrogen dry shipper for transporting cryopreserved items.
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Previously:
https://www.homemadetools.net/forum/...056#post187553
https://www.homemadetools.net/forum/...696#post136674
https://www.homemadetools.net/forum/...685#post186280
https://www.homemadetools.net/forum/...710#post182783
