Hangarau hanga o nga karapu nitrile:

1 Tīmata → whakamaua te wairewa waikawa pūhaumāota i te tuatahi → horoi ki te wai matao → wairewa wairewa kawakore → horoi maenei pokepokea → ma

ka werohia e te ringa ma te kaukau paraihe → whakamakuku ki te wai wera hei horoi → whakapouri i te whakamaroke o te maaka → te whakamaroke maaka maroke →

whakapouri → whakamaroke whakamaroke → taherapa nitrile impregnate → riihi 1 → hanga kiriata me te whakamaroke → koiri → kiriata

whakamaroke → riihi wai wera 2 → ruku No.1 tank wai marama → ruku No.2 tank wai marama → ruku No.3 tank wai marama → ruku

No.4 taika wai marama → whakakore → mutu