GHS Hazard Symbols & Lab Safety

Always wear safety goggles, lab coat, and closed-toe shoes. Tie back long hair and remove dangling jewelry.

Never pipette by mouth. Always use a pipette bulb or mechanical pipettor.

Know the location of the safety shower, eyewash station, fire extinguisher, fire blanket, and all exits before beginning work.

Add acid to water, never water to acid. Remember: "Do as you oughta, add acid to water." The exothermic mixing reaction can cause violent spattering if done in reverse.

Never leave Bunsen burners, hot plates, or heating mantles unattended. Turn off all heat sources when not in active use.

Dispose of chemicals properly — never pour anything down the drain without explicit guidance. Use designated waste containers for organic, inorganic, and halogenated waste.

Label all containers with the compound name, concentration, date, and your initials. Never use unlabeled containers.

Read the Safety Data Sheet (SDS) before using any unfamiliar chemical. Pay special attention to sections on hazards, first aid, and proper handling.

Never eat, drink, chew gum, or apply cosmetics in the laboratory. Wash hands thoroughly before leaving.

Report all spills, accidents, broken glassware, and injuries to your instructor or supervisor immediately, no matter how minor.