Kev paub txog kev tiv thaiv kev nyab xeeb hauv chav kuaj, corrosive, toxic, flammable, explosive thiab ntau hom reagents thiab yooj yim tawg iav instruments thiab ntau yam khoom siv hluav taws xob feem ntau siv. Txhawm rau ua kom muaj kev nyab xeeb ntawm tus kheej ntawm cov neeg soj ntsuam thiab kev ua haujlwm ntawm lub chaw kuaj mob ib txwm muaj, cov neeg kuaj xyuas yuav tsum muaj kev paub txog kev ua haujlwm nyab xeeb thiab ua raws li.