Ko te waea Pt-iridium he koranu takirua kei roto he konukōrete kei roto he selenium. He otinga totoka tonu i te pāmahana teitei. Ina whakamataohia mārire ki te 975~700 ºC, ka puta te pirau ā-wāhanga totoka, engari ka tino puhoi te tukanga taurite ā-wāhanga. Ka taea e ia te whakapai ake i te ātete waikura o te konukōrete nā te ngāwari o te whakakorikori me te waikura. Kei reira ngā koranu Ptlr10, Ptlr20, Ptlr25, Ptlr30 me ētahi atu, he pakeke teitei me te ira rewa teitei, he ātete waikura teitei me te ātete whakapā iti, ko te tere waikura matū he 58% o te konukōrete parakore, ā, ko te mate taumaha waikura he 2.8mg/g. He rauemi whakapā hiko tawhito. Whakamahia mō ngā whakapā mura teitei o ngā miihini rererangi, ngā whakapā hiko o ngā whakawhiti me te aro nui me ngā motuka Wei; ngā potentiometer me ngā paraihe mowhiti kawe o ngā pūoko tika pērā i ngā waka rererangi, ngā pere me ngā gyroscope.