These racks are heavy-duty and designed for higher capacity and durability. Specially designed for optimised cooling conditions and improved sample safety.

• Fit freezer boxes up to a 136×136 mm for increased storage flexibility
• Drawer-style freezer racks, each drawer can be individually removed, leaving the rest in the freezer
• In side-access racks each box fits into a distinct, individual compartment for easier inventory tracking

There are two systems used in laboratories - the standard 4-boxes deep racks and 5-boxes deep racks. The easiest way is to take out all racks (with the samples/ boxes included) and store those racks in some backup freezer. To be compatible with most common ULT freezer suppliers, these ULT freezers are designed for 4-boxes deep racks.

The ULT freezer with 3 compartments/shelves has higher compartments compared to the 5-compartment ULT freezer. Racks of a 5-compartment freezer do fit into a 3-compartment freezer but not vice versa. Most of the storage boxes have to be pulled out of the in the cold inner area of the ULT freezer to access the samples.

To get the maximum capacity out of the ULT freezer, the CryoCube F740 series (3-compartment) can be equipped with 3-compartment MAX racks. These racks only fit into the CryoCube F740 series 3-compartment instruments.