THIS CRYO BOXES ARE MOLDED IN POLYCARBONATE MAKING IT EXTRA STRONG AND AUTOCLAVABLE. THESE CAN ACCOMMODATE CRYO VIALS OF 1.8ML. CAPACITY AND ARE DESIGNED TO BE USED AT TEMPERATURES RANGING FROM – 190°C TO +121°C. THE TRANSPARENT COVER OF THE BOX GIVES A GOOD VIEW OF THE CONTENTS INSIDE AND IS NUMBERED FOR BETTER INVENTORY CONTROL.