Oke etinyere: Na kọntaktị ihe onwunwe dị 304 l ihe, ọ dịghị ahụ nwere ike ịbụ ụdị ọ bụla nke corrosive na-eguzogide obere viscosity mmiri, dị ka: ụdị nile nke reagents (ọgwụ mmanụ, mmanya, mmanya, anya tụlee, sirop), chemicals (solvents, acetone), mmanụ (nri nri mmanụ, mkpa mmanụ, ntecha (toner, etemeete mmiri, na-eguzogide ọgwụ), ka (oke mmiri ara ehi degrees 0), nri (oke okpomọkụ 0), ihe oriri dị ka mmiri ara ehi. ihe ọṅụṅụ, ihe ọṅụṅụ mkpụrụ osisi, mmanya mkpụrụ osisi, ngwa nri, mmanya soy sauce, mmanụ sesame, wdg na-enweghị mmiri mmiri dị elu na nke dị ala (mmiri nọọsụ, onye na-ehicha ihe)
Na-ejuputa nri, ahụike, ịchọ mma, kemịkalụ na mmiri mmiri ndị ọzọ. Na mgbakwunye: mmanya, mmanya, soy sauce, mmanụ, mmiri, wdg.
A na-ejikarị ya na nri, ịchọ mma, kemịkalụ, ọgwụ na ụlọ ọrụ ndị ọzọ. Ọ nwere ike ịrụ ọrụ naanị ya ma ọ bụ jikọọ na ahịrị mmepụta.
Nkwado nhazi.