PolarSafe 15ml and 50ml Tube Freezer Boxes

• Clear lids for easy visual inspection
• Easy-to-read numerical grid for tube reference and identification
• White top portion allows for easy labeling or marking
• Accommodates most 4" stainless steel freezer racks

PolarSafe polypropylene freezer boxes can accommodate 15 & 50ml centrifuge tubes for long term storage; an excellent alternative to cardboard storage boxes. Boxes can be stored to -90°C and are autoclavable to 122°C.