The Eppendorf® IsoRack work rack for 0.5mL PCR tubes holds 24 tubes and is designed for use with the Eppendorf® IsoTherm system. The IsoTherm system can be used to prevent enzymes from becoming inactive as well as for PCR sample preparation, sample transport, and slow thawing of frozen samples. Polycarbonate rack is stackable, autoclavable, floatable, and can be centrifuged in an MTP rotor. Material: Polycarbonate. Tube Size: 0.5mL. Capacity: 24 Reaction Tubes. Eppendorf® #: 022510100.