Lab Skills Lab Skills 1 Health and Safety

Lab Skills

Lab Skills 1. Health and Safety in the Laboratory 2. Laboratory Glassware and Balances 3. Volumetric Glassware – pipettes, and volumetric flasks 4. p. H Scale – Making and indicator 5. Using the p. H meter 6. Practical Assessment

Health and Safety in the Laboratory

Health & safety in the lab • The chemistry lab has many potential hazards. • You need to be aware of the hazards, and how to control them, and what to do if an accident happens. • There are laws governing health and safety in the laboratory.

Potential hazards in the Lab

Potential hazards in the Lab • Frayed power cords Cuts from broken glass • Water spilt near power points • Cords on the floor creating a trip hazard • Contaminated food if eating in the lab • • Spilling food • into chemicals • • Bunsen burner flames • Cracked flasks • Explosions Flammables Bunsen burners Matches • Damaged back from lifting • Dropping bottles from unbalancing Wet floor a slip hazard • • Fumes Splashes Burns Poisoning

Maintaining your safety in the lab

Maintaining your safety in the lab • Glasses/Goggl es PP • Gloves E • Lab coat s n g i s y t m s e f e Sa zch rou • Ha nge • Da ods • Go • Eye wash Foot ware • Showers Ventilatio n RC D Spill kits

Maintaining your safety in the lab

Maintaining your safety in the lab MSDS = Material Safety Data Sheets SOP = Standard Operating Procedures Labels

Labeling of chemicals Hazardous Chemicals Hazardous substances are required by law to be labelled with the following information: • • • dangerous goods class label product name, chemical name, United Nations Number, ingredients risk phrases and safety phrases (R & S Phrases) directions for use*, first aid procedures and emergency procedures* details of manufacturer or importer expiry date (where relevant)* and reference to Material Safety Data Sheet (MSDS). The above are required by law on the label of any hazardous substance in a container 500 ml or 500 g or larger. If the container is smaller than this the asterisked (*) information can be omitted from the label. If the container is too small to have a label attached, legislation requires that the label be tied to the container with string, or that the container is placed in an appropriately labelled outer container.

Labeling of chemicals Non-Hazardous Chemicals Non-hazardous chemicals should still be labelled: • full chemical name and concentration of constituents (abbreviations and chemical symbols/structures are not adequate) • name of the user and contact number • date • location (school/section, building, lab number).

Maintaining safety of others

Layout of the lab • Look around this lab. What are some of things you notice about the layout of this lab? • • Safety Benches Storage Waste Equipment

Layout of the lab • Safety equipment: shower, eye wash, fire extinguisher, first aid kit. • Benches: Chemical resistant, taps, gas outlets, etc. • Storage: Cabinets, separation of incompatible chemicals, glassware, PPE, etc. • Signage: Hazchem, dangerous goods signs, PPE signs, evac plan (near exit) • Taps: for water, gas, basins, washing glass ware. • Ventilation: windows, etc. Fume hoods • Weighing room: balances, etc. • Waste: paper bin, sharps bin, special chemical waste (e. g. Ag residues) • Equipment: analysis equipment such as UV/Vis. • Other: desk, computers

Layout of the lab

Safety Legislation, etc. Work, Health & Safety Act 2011 (Commonwealth) Acts of Parliament Occupational Safety & Health Act 1984 (WA) orc eab “To promote and secure the safety of le people in the workplace” Regulations Supports the corresponding Act. More detail. Delegated. Easy to change. Must be consistent with the Act. Codes of Practice 19. Duties of employers e l b a e (1) An employer shall: c r o f n (a) Provide and maintain a safe workplace; ot E NSafety Standards (b) Provide information and training; & Certifications (c) Consult and cooperate with safety and health officers e. g. ISO Enf

Summary • Potential hazards to you: chemical burns, fire, electric shock, back injuries, cuts • Potential hazards to others: colleagues, environment, general population • Control: signs, PPE, ventilation, spill kits, fire extinguishers, evacuation plan, MSDS • Layout of the lab. • Legislation: Acts, regulations, codes, standards

Laboratory Rules • • • No eating, drinking, smoking, chewing gum Safety glasses must be worn at ALL times Lab coats must be worn at ALL times Covered shoes must be worn at ALL times Switch mobile phones off Long hair must be tied back No paper in glass bins No glass in paper bins Do not work alone in the lab

Equipment • • Graduated pipette, bulb pipette Volumetric flask, conical flask, burette Beaker, graduated cylinder Funnel, glass stirring rod, spatula, thermometer Desiccator, test-tubes, watch glass, tongs Wash bottle, mortar and pestle Heater-stirrer, top-pan balance, analytical balance p. H meter, UV-vis