These patented blocks have a unique design for maximum flexibility. With various heights and able to accommodate glass or polypropylene vials ranging from 0.5 – 2.5 mL. The Multi-Block open / slotted bottom allows it to be immersed in liquid for total fluid contact with the vials to uniformly transfer heat or cold to and from the vials. Multi-Blocks are compatible with all autosamplers and robotic systems. They can be centrifuged up to 2500rpm. Also available in Aluminum for parallel processing.