Polypropylene freezer boxes accommodate 15 & 50mL centrifuge tubes for long term storage; an excellent alternative to cardboard storage boxes

Boxes can be stored to -90°C (130°F) and are autoclavable to 122°C (251.6°F). Accommodate most 4" stainless steel freezer racks.

Clear lid and easy-to-read numerical grid allows for tube reference and identification. White top portion allows for easy labeling or marking.