Nga kāwai whakawhiti ārai upoko sulfuric acid hei whakamahi mo te whakawhitiwhiti i te upoko sulfuric, he momo rongoā nui rawa atu me te haurangi. Nga kōpū maihi ai ki ngā pūngao e pai ana ki te whakatupu i te whiu o te upoko, pērā i te maīreka 316 inox rānei ko te whakarapu fluoropolymers. Kei roto i ēnei kāwai ngā tūtohu haumaru, pērā i ngā kōwhiringa rua-kore, ngā rākau whakaatu pūtore, me ngā toko whakatūke ki te whakahaere i ngā haurangi e pā ana ki te upoko sulfuric. Me whakaae ngā kāwai whakawhiti upoko sulfuric ki ngā tikanga here mōhiohia me ngā here tūmatawhāiti mo te whakawhitiwhiti i ngā take haurangi. Ko tō rātou whakatūnga pai me ngā rākau haumaru ka whakaaturia he mea nui mo te whakawhitiwhiti i te upoko sulfuric ki ngā whenua rerekē, inā lenei ki ngā mahi rangahau rongoā me te tahua paraihe.