Made of polycarbonate. Designed to be used at temperatures between -196°C and +121°C and are autoclavable at 120°C, 15 psig (1 bar) for 20 minutes. A transparent cover allows the user to see the contents of the box, and is keyed to the base to prevent misalignment. Printed with a series of squares (numbered from 1 to 25, 1 to 81, or 1 to 100), the surface accepts writing with markers, facilitating inventory control. Removal of vials facilitated by an innovative vial picker supplied with each storage box.