Ko te pouaka whakairoiro (poti kauwhata) tonu he kaikawe, ka taea e taatau te whakauru i nga rauemi mata me nga waahanga e hiahiatia ana e taatau ki te kimi, ki te whakatau ranei i te hoahoa e honoa ai te mahana o te mahana. Ko te pouaka whakairoiro e hangaia ana mo te graphite horihori na te mahinga miihini. Na i etahi wa ka kiia he pouaka kauwhata, i etahi waa ka kiia he poti kauwhata. Ko te pouaka kauwhata e whakamahia ana i roto i nga oumu parekura korehau, oumu whakauru, oumu wera, oumu pupuhi, umu nitridation ion, tantalum niobium smelting furnaces, vacuum quenching furnaces, etc.