A thermal cycler is a Molecular Biology Laboratory Equipment, used in the amplification of DNA molecules by the PCR technique (polymerase chain reaction), because it is capable of performing temperature cycles necessary for amplifying The DNA strands.
The process of the PCR is automatic and it can be completed in just a few hours. This process is completely directed by the thermocycler, who is programmed to change the reaction temperature every few minutes making the denaturation and synthesis of DNA, The thermal cycler is different if a final point PCR or a real-time PCR is performed, since the latter must detect fluorescence and in different absorption channels.