Chemical fume hood - allows laboratory workers to work in a clean environment without contaminants, and lowers the level of risk in the work environment. operation manual of fume hood is the removal of toxic fumes that take place in experiments outside the room. Chemical Safety storage cabinet-Storage cabinets are designed to protect operators from toxic and hazardous chemicals. It is very important to separate hazardous substances in the laboratory, in order to avoid the formation of toxic gases that will harm workers.