Safety in the Laboratory

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

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

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

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)

Chemical Spill Response Inform teacher of any spills Clean up minor spills immediately Wash hands Eye wash station – 10-15 minutes Emergency shower

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

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

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

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

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

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

Chemical Safety Symbols Consumer safety: HHPS Workplace safety: WHMIS

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

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

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.

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.

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.

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

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

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?

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??