Ms. GalanMerced High School

Agriculture Department

Laboratory SafetyAg. Biology

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After this lesson students will be able to:◦Explain why preparation is important when carrying out scientific investigations in the lab in the field.

◦Describe what you should do if an accident occurs.

◦Identify safety icons and explain their meaning.

Good preparation helps you stay safe when doing science activities.

Begin the day beforeFamiliarize yourself with the directions/procedures.

If anything is unclear, ask questions!

Follow instructions exactly. Never try anything on your own without asking Ms. Galan first.

Keep work area clean and organized. Don’t rush! Take your time!

Clean-up your work area. Turn off and unplug any equipment that’s not being used.

Throw away waste in it’s proper receptacle.◦Sharp objects do NOT go into the regular

trash can! Wash your hands thoroughly!

Follow the specific instructions provided.

Do not perform any investigations without Ms. Galan!

Take care not to spill material in the lab.

Clean up spills immediately.

NEVER eat, drink, or bring food into lab.

Immediately report all accidents to Ms. Galan, no matter how small.

Report any fire at once.

Know where emergency equipment is located.◦Fire Extinguisher◦First Aid Kit◦Nearest Telephone◦Nearest Exit

Wear safety goggles when handling chemicals, burners, or any substance that may get in your eyes.

Wear an apron whenever you work with heat or chemicals.

Tie back long hair to keep away from flames.

Remove any clothing or jewelry that can hang down into chemicals, flames, and moving parts.

Never use heat source such as a candle or burner without safety glasses.

Never heat a chemical you are not instructed to heat.

Maintain a clean work area and keep items away from flame.

Never reach across a flame or hot surface.

Make sure you know how to operate a hot plate.

Never leave machines unattended.

When heating test tubes or bottles, never point towards yourself or others.

Never heat a closed container. ◦ Hot air, vapors, or gases

may cause it to explode.

Never pick up a container that has been heated without testing it. ◦ Hold the back of your hand

near the container. If you can feel the heat, don’t touch it!

Use clamps, tongs, or heat-resistant gloves to handle hot materials.

Never mix chemicals, without permission from Ms. Galan. ◦You may produce a

dangerous substance or explosion.

Never touch, taste, or smell a chemical that you are unsure if it’s harmless or not.

Never smell chemicals directly. Wave hand over opening of container to waft fumes toward nose.

Keep all containers closed when not in use.

Dispose of chemicals properly.

Be careful when working with acids and bases. Pour such chemicals from one container to another over the sink.

When diluting an acid, pour the ACID into WATER. NEVER pour WATER into an ACID.◦ The acid may splash on you!

If acids or bases get on skin or clothes, rinse with water immediately. Notify Ms. Galan of any spills!

Never heat glassware that isn’t dry.

Always check glassware to see if its hot before picking it up.

Never use broken or chipped glassware. ◦ If you notice or accidently

break glassware, notify Ms. Galan and deposit in proper container.

Never eat or drink from lab glassware.

Clean glassware before putting it away.

No experiments that cause pain, discomfort, or harm to animals should be done in the classroom or at home.

Follow instructions completely. Special handling is required when animal is scared, pregnant, feeding, or with its young.

Wash hands well!!!

Draw each symbol and write the description on the Lab Safety Vocab Square.

Follow specific instructions provided Don’t perform investigation without instructor.

Always wear safety goggles to protect your eyes from chemicals, flames, heating, and/or glassware.

Wear a lab apron to protect skin and clothing from injury.

Wear disposable gloves to protect yourself from chemicals, plants, or animals that could be harmful.

Never touch your face with gloves on!

Plastic Gloves SymbolPlastic Gloves Symbol

Use clamps or tongs to pick up hot glassware. Never touch with bare hands.

Tie back loose hair and clothing. Wear safety goggles.

Keep all combustible materials away from flames.

Use an oven mitt when handling hot objects.

Never touch hot items with bare hand.

Indicates presence of acid or harmful chemical.

Avoid getting acid and other chemicals on your skin, clothing, or eyes.

Don’t inhale vapors. Wash your hands immediately after lab.

Corrosive Chemical SymbolCorrosive Chemical Symbol

PoisonPoison Don’t let poisonous chemicals touch

your skin. NEVER inhale vapors. Wash hands immediately!

FumesFumes Poisonous or unpleasant vapors

produced. Work in well ventilated area. Test odor only when instructed by

Ms. Galan.

Handle breakables with care◦Glassware: Beakers, test tubes, etc.

Don’t touch broken glassware.◦Notify Ms. Galan

IMMEDIATELY!

Handle scalpels and other sharp objects with care.

ALWAYS cut AWAY from you.

Notify Ms. Galan immediately if you cut yourself, no matter how SMALL!

Animal SafetyAnimal Safety Treat live or preserved animals with care to avoid harming the animal or yourself.

Wash hands after lab. Wear gloves when handling or dissecting animals.

If you are allergic to certain plants, tell Ms. Galan immediately.

Avoid touching harmful plants with bare hands.

Wash hands!

Never use equipment around water or when hands are wet.

Untangle cords that could trip someone.

Unplug equipment when not in use.

Electrical ShockElectrical Shock

Physical SafetyPhysical Safety Be cautious of your surroundings

to avoid injury.

Dispose of chemicals and other materials into their proper waste basket.

DisposalDisposal

Hand WashingHand Washing Wash hands well after EVERY

lab activity. Use soap and warm water.

Rinse well!

Choose a safety symbol Create a visual safety poster warning others of possible danger for your safety symbol.

Include the following information:◦Safety Symbol Title◦Safety Symbol◦Safety Procedure Description◦Picture showing good/bad science procedures