Eppendorf 2ml Cryo Tray

thingiverse

Not quite ready for the spotlight yet, this tray has been uploaded to share as part of a collaborative effort. Its purpose is to safely secure 5 Eppendorf tubes in a liquid nitrogen bath setup. Once secured, the tray can be easily transferred to a freezer or dry ice storage solution. Multiple trays can be connected for safe shipping purposes. The tray's design allows it to be locked top-to-bottom by threading onto a 1/4"-20 carriage bolt and securing the other end with a fender washer across the top of the sample tubes, followed by a spring or split washer, then a wingnut. Detailed pictures and instructions will be provided once the project is complete. Future improvements include creating a generic version without embedded labels, integrating a printed pentagonal washer and spacers for added efficiency, reducing material usage, optimizing the layout for better ventilation in liquid nitrogen environments, and enhancing overall performance.