Stratagene RoboCycler 40 PCR Machine, Contains 4 heat blocks that you set to the desired temperature. A robotic arm moves the samples from block to block eliminating ramp time. 40 wells /Block, Well Volumen 0.6 ml, linea temp. range up to 14 or 22 across the well block, with temp. difference of up to 2 C between adjacent wells in each row. Can test up to 12 different anealing emp. in a single experiment. Single temperatures of up to 99C for pcr cycling.