Techne announces two new thermal cyclers, TC-4000 and TC-5000. Styled to match the latest TC-3000 personal cycler range, the high performance TC-4000 and TC-5000 gradient thermal cyclers are available at highly attractive list prices compared with units of similar specifications. Building on the success of the TC-412, the new TC-4000 features a versatile block format with interchangeable 60 x 0.5ml, 96 x 0.2ml, 384-well and in- situ thermal blocks. With a flexible heated lid and intuitive programming the TC-4000 can accommodate a variety of consumables and is ideal for high sample throughput applications using Gensoft PC software to control linked thermal cyclers. The new TC-5000 is a gradient thermal cycler with an easyto-program touch-screen interface and graphical display showing the sample temperature profile while the experiment is running.