These boxes are for use in mechanical freezers and in liquid nitrogen tanks. The boxes are designed with the ease of use in mind. The forward-sloped base, the high-contrast, imprinted indexing on the transparent lid ensure quick visual orientation. 

All boxes (except the 5x5 box) have hinged lid which ensure easy one-handed operation. The boxes include vent and drain hole and are stackable. The boxes can be used in temperatures from -196°C to 121°C and are autoclavable. All 133x133 mm boxes are delivered including picking tool