IMPORTANCE OF LAB IMPORTANCE OF LAB SAFETYSAFETY

Lab safety is a major aspect of every lab-based science class.

Lab safety rules and symbols are needed so that the students do

not injure themselves or

their classmates.

LAB SAFETY RULESLAB SAFETY RULES

Always follow Always follow the teacher’s the teacher’s directions directions and only do and only do lab work lab work when a when a teacher is teacher is present.present.

Conduct yourself in a Conduct yourself in a responsible manner at all times. responsible manner at all times.

No Horseplay!No Horseplay!

Do not touch Do not touch any any equipment, equipment, chemicals, or chemicals, or other other materials until materials until told to do so.told to do so.

Do not eat food, Do not eat food, drink drink beverages, or beverages, or chew gum in chew gum in the lab. Do not the lab. Do not use lab use lab glassware as glassware as food or food or beverage beverage containers.containers.

Report Report ALLALL accidents to your teacher immediately, even if accidents to your teacher immediately, even if you think it is minor.you think it is minor.

Be aware of safety hazards associated with each chemical Be aware of safety hazards associated with each chemical you use.you use.

Eye accident – Rinse the eye with water for at least 15 Eye accident – Rinse the eye with water for at least 15 minutes.minutes.

Fire Burns – Stop, drop, and cover yourself with a fire Fire Burns – Stop, drop, and cover yourself with a fire blanket or use the safety shower. Do not remove clothing blanket or use the safety shower. Do not remove clothing stuck to victim. Get medical attention immediately.stuck to victim. Get medical attention immediately.

CLOTHINGCLOTHINGWear:Wear:

• Goggles/safety Goggles/safety glassesglasses

• Closed-toed shoesClosed-toed shoes• Clothing made of Clothing made of

natural based fiber natural based fiber such as cottonsuch as cotton

• Tie back long hairTie back long hair

DoDo NOT NOT Wear: Wear:• SandalsSandals• JewelryJewelry• Loose or baggy Loose or baggy

clothingclothing

LAB SAFETY EQUIPMENTLAB SAFETY EQUIPMENT

Safety ShowerSafety Shower Safety GogglesSafety GogglesEye Wash

LAB SAFETY EQUIPMENTLAB SAFETY EQUIPMENTFireFire

ExtinguisherExtinguisherFire BlanketFire Blanket Fume Hood

LAB SAFETY SYMBOLSLAB SAFETY SYMBOLS

LAB SAFETY SYMBOLSLAB SAFETY SYMBOLS

LAB LAB SAFETY SAFETY

SYMBOLSSYMBOLS

WASTE DISPOSALWASTE DISPOSAL First ask your First ask your

teacher where/how to teacher where/how to dispose of waste.dispose of waste.

Never pour anything Never pour anything down the drain down the drain unless you are told unless you are told to do so.to do so.

A waste bottle will be A waste bottle will be supplied for supplied for substance that substance that cannot go down the cannot go down the drain.drain.

SAFE DISPOSALSAFE DISPOSALTo prevent environmental To prevent environmental contamination, DO NOT dispose contamination, DO NOT dispose chemicals into the sink unless chemicals into the sink unless the teacher has informed you the teacher has informed you that it is safe to do so. that it is safe to do so.

TOXIC WASTE GANG

REASONS FOR PROPER WASTE DISPOSALREASONS FOR PROPER WASTE DISPOSAL

Hazardous Hazardous chemicals down the chemicals down the drain can lead to drain can lead to ground and surface ground and surface water pollution.water pollution.

Plants and animals Plants and animals will die if they are will die if they are exposed to exposed to hazardous chemical hazardous chemical waste.waste.

NATIONAL NATIONAL FIRE PROTECTION FIRE PROTECTION

ASSOCIATIONASSOCIATION

4 - Deadly4 - Deadly3 - Extreme Danger3 - Extreme Danger2 - Hazardous2 - Hazardous1 - Slightly Hazardous1 - Slightly Hazardous0 - Normal Material0 - Normal Material

FLASH POINTSFLASH POINTS4 - Below 23 4 - Below 23 ooC (73 ºF)C (73 ºF)3 - Below 38 3 - Below 38 ooC (100 ºF)C (100 ºF)2 - Below 93 2 - Below 93 ooC (200 ºF)C (200 ºF)1 - Above 93 1 - Above 93 ooC (200 ºF)C (200 ºF)0 - Will not burn0 - Will not burn

4 – May detonate4 – May detonate3 – Shock and heat may 3 – Shock and heat may detonatedetonate

2 – Violent chemical change2 – Violent chemical change1 – Unstable if heated1 – Unstable if heated0 – Stable0 – Stable

ACID – AcidACID – Acid ALK – AlkaliALK – Alkali COR – CorrosiveCOR – Corrosive OXY – OxygenOXY – Oxygen P – PolymerizationP – Polymerization W – Use NO Water W – Use NO Water - Radiation- Radiation

––