1. Safety in the Laboratory

2. In general... DO Listen to the teacher’s directions
Read experiment procedure carefully
Be familiar with safety equipment
Keep a clean and tidy workspace
Exercise common sense
DON’T
Eat or drink in the lab (includes gum!)
Fool around in the lab
Handle hot containers/substances

3. General Safety Guidelines
Know how to use the lab equipment
Be familiar with experiment procedures before beginning
Clear your workstation and walkways
Clean up after
Use your common sense
In the case of an accident...
inform your teacher

4. What Not To Wear Dangling jewellery Loose clothing Open-toe shoes
Long hair
Contact lenses

5. Chemical Safety Wear safety goggles at all times Label your chemicals!
Never taste or sniff chemicals
Wear gloves when dealing with hazardous chemicals
Pour liquids using small containers
Dispose of materials as instructed (designated waste container)

6. Chemical Spill Response
Inform teacher of any spills
Clean up minor spills immediately
Wash hands
Eye wash station – minutes
Emergency shower

7. Glassware Safety Check for cracks, chips, or dirt before use
Use the appropriate equipment to handle hot glassware
Allow glassware to cool before touching it
Do not place hot glassware directly on the counter
beaker tongs
test tube holder

8. Glass Breakage Response
Inform your teacher if glassware is cracked or gets broken
Glass will be disposed of in designated container

9. Fire and Heat Safety Burns are the most common lab injury!!
Never leave an open flame unattended
Use the appropriate equipment to handle hot glassware
When heating substances, never point the mouth of the container towards someone
hot plate
Bunsen burner

10. Fire Response Inform your teacher Fire extinguisher Fire blanket
Emergency shower
Stop, drop, roll

11. Video Write down all of the lab safety violations that you notice!

12. Cleaning Up After an Experiment
proper disposal:
chemicals (as instructed)
any broken glassware
wash and dry:
glassware
workstation
return other apparatus as instructed

13. Chemical Safety Symbols
Consumer safety: HHPS
Workplace safety: WHMIS

14. HHPS – Consumer Safety Household Hazardous Product Symbols
Type of Hazard
On what types of household products have you seen these symbols?
What types of precautions should you take with each hazard?
Degree of Hazard

15. WHMIS – Workplace Safety
Workplace Hazardous Materials Information System
Canadian system
workplace only
three parts: classification, labelling, education
classification - Health Canada
labelling – manufacturer
education – employer/teacher

16. Compressed Gas: Products are under pressure
If a pressurized container is punctured because it is dropped or exposed to excessive heat, the exploding fragments present a serious physical hazard.
Store in a secure place. Don’t heat or drop.
Flammable/Combustible:
These materials can pose a danger of fire and explosion, because they ignite easily.
Don’t heat. Avoid sources of sparks/flames.
Oxidizers
Oxidizing materials greatly increase the risk of fire if they come in contact with materials that can burn.
On their own, they can also cause burns to skin.
Store away from combustible materials.
Wear body and eye protection.

17. Poisonous & Infectious - Immediate and Serious Effects
These materials can cause death or immediate injury.
Do not ingest. Avoid direct contact.
Poisonous & Infectious – Other Toxic Effects
cause immediate skin or eye irritation, or long-term health problems (e.g., allergic responses, birth defects, cancer, reproductive problems).
Avoid direct contact.
Biohazardous Infectious
These materials contain micro-organisms (viruses, bacteria, fungi) that cause disease.
Avoid breathing vapours.
Avoid contamination.

18. Corrosive
Corrosive materials including lye and acids. These can cause permanent burns to skin and eyes.
Avoid direct contact.
Dangerously Reactive
undergo vigorous reactions when exposed to certain conditions (e.g., pressure changes, temperature).
Also includes products that can react with water to produce a toxic gas
Store in appropriate containers.
Store and work in designated areas.

19. Labelling Labels are included on all workplace chemicals chemical name
description of hazards
WHMIS
first aid
specific precautions for handling and use
manufacturer

20. Safety Quiz performing lab activities is a privilege
you must demonstrate your knowledge on a quiz
lab safety rules, symbols & equipment
achieve a mark of 80%+ in order to perform labs
your teacher will inform you of the date of your safety quiz

21. What two symbols would you expect to see on a label for hydrogen gas?
Practice: Hydrogen gas is stored in containers under pressure. This gas is highly flammable.
What two symbols would you expect to see on a label for hydrogen gas?
Describe the following:
The risks illustrated by the two symbols
Precautions someone would need to take when working with the gas
Where it could be safely stored
Emergency response procedure
If you did not know the answer to part d, where would you find this information?

22. at least he’s wearing goggles??
In Summary…
The lab should be fun, but it can be dangerous.
be aware of any hazards
take appropriate precautions
chemicals (HHPS, WHMIS), glassware, heating
be prepared for emergency response
exercise common sense at all times!
at least he’s wearing goggles??