The Stratagene Robocycler Gradient 96 is a PCR thermal cycler. It features 4 separate blocks for individualized temperatures, and a robotic arm that moves the tubes from one block to the next, allowing the machine to avoid ramping times. It has capacity for 96 200ul tubes, three heating blocks with a temperature range from 25 to 99°C, and a single block from 6 to 25 °C. --- Stratagene Robocycler Gradient 96 PCR Thermal Cycler.