I-thermal cycler (eyaziwa nangokuthi i-thermocycler, Umshini we-PCR noma i-DNA amplifier) ​​iyithuluzi laselabhorethri elivame ukusetshenziswa kakhulu ukukhulisa izingxenye ze-DNA ngokusebenzisa i-polymerase chain reaction (PCR ).Umshini unebhulokhi elishisayo elinezimbobo lapho amashubhu abambe izingxube zokusabela angafakwa khona.Thina (MeCan medical) singahlinzeka Umshini we-PCR nesikhathi sangempela Umshini we-PCR (umshini we-RT-PCR).