Presentation on theme: "Lab Safety Rules & Procedures"— Presentation transcript:
1Lab Safety Rules & Procedures No food/drink in the lab area.All you need in lab area: lab instructions, notebook & pen.2. Safety glasses required for most labs, aprons optional.3. Never dispose of chemicals in the sink or trash unless it has been said to do so – no solids in the sink.4. Report any accident (spill, break, etc) or injury (cut, burn, etc) to the instructor immediately no matter how trivial it may appear.5. Flammable and Inflammable are synonyms
2Lab Safety Rules & Procedures 6. Follow all written and oral instructions carefully – if you don’t understand a direction or procedure, ASK!7. Monitor experiments at all times – do not wander around the room interfering with other lab groups progress.8. Note contact lenses & sandals. Never barefoot.9. Wash hands with soap and water after all experiments – try to keep hands away from face, eyes, mouth and body during labs. Any chemical on the skin should be flushed immediately with water – notify instructor before use of eyewash or chemical shower.
3Lab Safety Rules & Procedures GLASSWARE/PORCELAIN1. Examine glassware/porcelain before use – never use chipped, dirty or cracked glassware.2. Do not rinse or place hot glass in water, it will shatter.3. Hot and cold glass/iron appear the same – OUCH!4. Broken glass goes in the broken glass tray – use broom/dustpan.
5Lab Safety Rules & Procedures TIRRILL BURNER1. Watch for long hair, dangling jewelry and loose clothing; don’t reach over a flame or look above a container that is being heated.2. Be sure that gas valves are closed when not in use and when leaving the lab.3. The bottom valve controls the gas intake – opening raises the height of the flame. A flame should never be over 3 inches high – a high flame is not a hotter flame.4. The barrel of the burner is the air adjustment – opening makes the flame more blue (hotter). Blue is hotter than orange.
6Common Lab Procedures SCALES/BALANCES 1. Make sure the scale is tared (zeroed) before use.2. Use the same scale throughout the entire lab.3. Never place solids directly on the pan.4. Never weigh hot objects – it is dangerous, ruins the pans and inaccurate.5. Electronic balance can mass up to 150 grams.
7Common Lab Procedures GENERAL 1. Volume markings on beakers and flasks are approximate, use graduated cylinder for accuracy.2. Always read at eye-level from the bottom of the meniscus.3. Never return excess unused chemicals to their containers unless told to do so.4. Never stopper a hot flask – the flask will cool and suck in the stopper.5. NEVER put your own eyedropper or scoop into a shared container – use the one provided.
8Do You Know Where These Are? ScalesBroken Glass TraySafety Goggle CabinetFume HoodEyewash StationApronsDistilled (DI) WaterBurner & Equipment (Blue Sheets)Paper Towels & Spill Towels