Mumasena aa laboratory, kuchenjezya kupati kulayandika aawo nobelesya sodium sulfide. Kakutanabelesegwa, magilazi aakukwabilila amagilovu aa raba ayelede kusama, mpawo kubeleka kweelede kuchitwa mukati kachikwabilizyo chabusi. Ikuti bbodela lya reagent lyajulwa, lyeelede kujalwa muchikkwama chapulasitiki kuchitila kutabilila kunyonyooka kwamuwo, ooko kunga kwasandula kuba musamu. Kuti bbodela lyawida ansi, utasanzyi amaanzi! Chakusanguna, vumba zyintu zyakatila amusenga uuyumu naakuti bulongo, mpawo uzibweze kobelesya fosholo lyapulasitiki mpawo uzibike muchibbeeke chakusowela tombe.

Kubelekela antoomwe andiswe takukatazyi pe, kupa zipepa zyakuvwuntauzya zya COA zyabuyo alimwi amapepa aakukwabilila makani aa MSDS, alimwi akugwasyilizya kusunkwa kwabantu bambi. Beenzuma bajisi ziyandika balakonzya kutujata kufumbwa chiindi kwiinda mukutinika aawa!