Compatible with most robotic workstations, this polypropylene storage rack can be used with most cell harvesters and leading 8- and 12-channel pipettors. It contains 96 removable polypropylene square tubes in a 8 x 12 configuration, each having a 2.1ml capacity . Although the tubes are square, the bottom is round to facilitate emptying. For procedures requiring a low surface tension such as protein and nucleic acid work, a special tube has been developed using a type of polypropylene specifically designed to avoid potentially harmful lubricants while minimizing liquid retention. The autoclavable rack and tubes are ideal for storage of blood and other biological samples at temperatures, from -17C for freezer storage, up to 121C. Tubes are available separately. A PVC cover is also supplied for full protection of tube contents. Racks are stackable to save on storage space.