Thermal cycler (wanda kuma aka sani da thermocycler, PCR inji ko DNA amplifier) ​​kayan aikin dakin gwaje-gwaje ne da aka fi amfani dashi don haɓaka sassan DNA ta hanyar sarkar polymerase (PCR ).Injin yana da shingen thermal tare da ramuka inda za'a iya shigar da bututu masu riƙe da gaurayawan dauki.Mu (MeCan likita) za mu iya samar da PCR inji da kuma ainihin-lokaci PCR inji (RT-PCR inji).