A thermocycler is a laboratory equipment also called a thermal sequencer. This equipment allows to obtain the amplification of DNA molecules by PCR (Polymerase Chain Reaction) technique, through cyclical changes of temperatures that generate in turn the amplification of strands of this nucleic acid.
This instrument is used for qualitative amplifications or even to quantify the amount of amplified DNA. PCR enables a small amount of DNA molecules to be amplified many times, exponentially. The PCR technique is an automatic process and can be completed in just a few hours. This process is carried out completely in a thermocycler, which is programmed to change the reaction temperature every few minutes making possible the denaturation and synthesis of DNA.