I-1, emva kokusetshenziswa kwamahlumela ensimbi kumele abekwe eshalofini elizinikezele, agcinwe embonini engenamoya, eyomile, ehlanzekile, ngokugcinwa ngesandla. I-2, indawo engaphezulu kufanele ihlale ivikela ukugqwala, akuvunyelwe ku-asidi, i-alkali, usawoti, amagesi amakhemikhali nokugcinwa komswakama. 3, akuvunyelwe endaweni yokushisa ephezulu ...
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