Used to amplify DNA segments through the polymerase chain reaction process this series of Techne Prime Thermal Cyclers employs the Peltier effect. Their heated lids prevent condensation in samples and their touch screen operation enables quick setup and easy programming with the intuitive software. The 3 Prime Base Thermal Cyclers offers a space-saving footprint and interchangeable block format. The 3 Prime X Thermal Cyclers expands sample capacity and can be upgraded to include gradient cycling capabilities. The 3 Prime G Thermal Cyclers has a 48-well block format and offers eight columns for annealing temperature optimization and six rows for optimizing reagents.