The In-Situ Adapter (4 slide capacity) is used with the T5000-96 (TC 9639) multi-format block, there is no need for the expense of multiple interchangeable blocks. It has the flexibility to accept 96 x 0.2ml tubes, a 96 well plate or 39 x 0.5ml tubes all in the same sample block. An in-situ adapter is available for use with 4 slides. Additionally, the unit may be purchased with a 384 well sample block.