Thermal cycler (nke a makwaara dị ka thermocycler, PCR igwe ma ọ bụ DNA amplifier) ​​bụ ngwa ụlọ nyocha a na-ejikarị eme ka akụkụ DNA dịkwuo elu site na mmeghachi omume polymerase (PCR ).Igwe ahụ nwere ihe mgbochi ọkụ nwere oghere ebe enwere ike itinye tubes na-ejide ngwakọta mmeghachi omume.Anyị (MeCan ahụike) nwere ike ịnye ya PCR igwe na ezigbo oge Igwe PCR (igwe RT-PCR).